Loralie J. Langman, Ph.D.

  1. Chemist
  2. Forensic Toxicologist
  1. Masuda S, Lemaitre F, Barten MJ, Bergan S, Shipkova M, van Gelder T, Vinks S, Wieland E, Bornemann-Kolatzki K, Brunet M, de Winter B, Dieterlen MT, Elens L, Ito T, Johnson-Davis K, Kunicki PK, Lawson R, Lloberas N, Marquet P, Millan O, Mizuno T, Moes DJAR, Noceti O, Oellerich M, Pattanaik S, Pawinski T, Seger C, van Schaik R, Venkataramanan R, Walson P, Woillard JB, Langman LJ. Everolimus Personalized Therapy: Second Consensus Report by the International Association of Therapeutic Drug Monitoring and Clinical Toxicology. Ther Drug Monit. 2024 Sep 25 Epub 2024 Sept 25
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  2. Kinard TN, Sharma P, Alegria KN, Langman LJ, Jannetto PJ, Snozek CLH. Characterization of the alcohol biomarker phosphatidylethanol in donor whole blood and apheresis red blood cells: Implications for transfusion recipients. Transfusion. 2024 Sep; 64 (9):1617-1622 Epub 2024 July 09
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  3. Snozek CLH, Langman LJ, Dizon A, Krasowski MD. Laboratorian Interpretation of Drug Testing Results in Pain Management: Lessons From College of American Pathologists Proficiency Testing. Arch Pathol Lab Med. 2024 Feb 8 Epub 2024 Feb 08
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  4. Jannetto PJ, Langman LJ. Analysis of Hypoglycemic Drugs by Liquid Chromatography-Tandem Mass Spectrometry. Methods Mol Biol. 2024; 2737:297-306
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  5. Snozek CLH, Kinard TN, Alegria KN, Jannetto PJ, Langman LJ. Artificial elevation of phosphatidylethanol due to red blood cell transfusion. Clin Biochem. 2023 Oct; 120:110651 Epub 2023 Sept 23
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  6. Lahr RG, Sharma P, Maus A, Langman LJ, Jannetto PJ. Development of an LC-MS/MS assay with automated sample preparation for phosphatidylethanol (PEth)- Not your typical clinical marker. J Chromatogr B Analyt Technol Biomed Life Sci. 2023 Sep 01; 1229:123886. Epub 2023 Sep 11.
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  7. Atiq MA, Peterson SE, Langman LJ, Baudhuin LM, Black JL, Moyer AM. Determination of the Duplicated CYP2D6 Allele Using Real-Time PCR Signal: An Alternative Approach. J Pers Med. 2023 May 24; 13 (6)
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  8. Lemaitre F, Budde K, Van Gelder T, Bergan S, Lawson R, Noceti O, Venkataramanan R, Elens L, Moes DJAR, Hesselink DA, Pawinski T, Johnson-Davis KL, De Winter BCM, Pattanaik S, Brunet M, Masuda S, Langman LJ. Therapeutic Drug Monitoring and Dosage Adjustments of Immunosuppressive Drugs When Combined With Nirmatrelvir/Ritonavir in Patients With COVID-19. Ther Drug Monit. 2023 Apr 1; 45 (2):191-199
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  9. Langman LJ, Rushton AM, Thomas D, Colbourne P, Seiden-Long I, Brun MM, Colantonio D, Jannetto PJ. Drug testing in support of the diagnosis of neonatal abstinence syndrome: The current situation. Clin Biochem. 2023 Jan; 111:1-10 Epub 2022 Nov 12
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  10. Langman LJ, Gaskins J, Korte E, Maluf C, Wooderchak-Donahue WL, McMillin GA, Jannetto PJ, Hartley B, Malkani A, Yakkanti M, Jortani SA. Endogenous and iatrogenic sources of variability in response to opioid therapy in Post-Surgical and injured orthopedic patients. Clin Chim Acta. 2021 Nov; 522:105-113 Epub 2021 Aug 09
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  11. Bergan S, Brunet M, Hesselink DA, Johnson-Davis KL, Kunicki PK, Lemaitre F, Marquet P, Molinaro M, Noceti O, Pattanaik S, Pawinski T, Seger C, Shipkova M, Swen JJ, van Gelder T, Venkataramanan R, Wieland E, Woillard JB, Zwart TC, Barten MJ, Budde K, Dieterlen MT, Elens L, Haufroid V, Masuda S, Millan O, Mizuno T, Moes DJAR, Oellerich M, Picard N, Salzmann L, Tonshoff B, van Schaik RHN, Vethe NT, Vinks AA, Wallemacq P, Asberg A, Langman LJ. Personalized Therapy for Mycophenolate: Consensus Report by the International Association of Therapeutic Drug Monitoring and Clinical Toxicology. Ther Drug Monit. 2021 Apr 1; 43 (2):150-200
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  12. Delaney SR, Danso D, Langman LJ, Jannetto PJ. Assessment of mass spectrometry-based pain management testing in clinical laboratories across North America. Clin Biochem. 2020 Nov; 85:49-52 Epub 2020 Aug 18
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  13. Fatica E, Faber J, Gaffron C, Bjergum M, Langman L, Jannetto P. Quantification of Serum Sulfamethoxazole and Trimethoprim by Ultra-fast Solid-Phase Extraction-Tandem Mass Spectrometry. Ther Drug Monit. 2020 Oct; 42 (5):724-732
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  14. Elens L, Langman LJ, Hesselink DA, Bergan S, Moes DJAR, Molinaro M, Venkataramanan R, Lemaitre F. Pharmacologic Treatment of Transplant Recipients Infected With SARS-CoV-2: Considerations Regarding Therapeutic Drug Monitoring and Drug-Drug Interactions. Ther Drug Monit. 2020 Jun; 42 (3):360-368
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  15. Mbughuni MM, Stevens MA, Langman LJ, Kudva YC, Sanchez W, Dean PG, Jannetto PJ. Volumetric Microsampling of Capillary Blood Spot vs Whole Blood Sampling for Therapeutic Drug Monitoring of Tacrolimus and Cyclosporin A: Accuracy and Patient Satisfaction. J Appl Lab Med. 2020 May 1; 5 (3):516-530
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  16. Lahr RG, Jannetto PJ, Langman LJ. The challenge that chlorine presented during the development of a benzodiazepine assay. Clin Biochem. 2020 Feb; 76:38-41 Epub 2019 Dec 04
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  17. Brunet M, van Gelder T, Asberg A, Haufroid V, Hesselink DA, Langman L, Lemaitre F, Marquet P, Seger C, Shipkova M, Vinks A, Wallemacq P, Wieland E, Woillard JB, Barten MJ, Budde K, Colom H, Dieterlen MT, Elens L, Johnson-Davis KL, Kunicki PK, MacPhee I, Masuda S, Mathew BS, Millan O, Mizuno T, Moes DAR, Monchaud C, Noceti O, Pawinski T, Picard N, van Schaik R, Sommerer C, Vethe NT, de Winter B, Christians U, Bergan S. Therapeutic Drug Monitoring of Tacrolimus-Personalized Therapy: Second Consensus Report. Ther Drug Monit. 2019 Jun; 41 (3):261-307
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  18. Hosseinnejad K, Yin T, Gaskins JT, Stauble ME, Wu Y, Jannetto P, Langman LL, Jortani SA. Lack of Influence by CYP3A4 and CYP3A5 Genotypes on Pain Relief by Hydrocodone in Postoperative Cesarean Section Pain Management. J Appl Lab Med. 2019 May; 3 (6):954-964 Epub 2018 Sept 06
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  19. Langman LJ, Jannetto PJ, Reichard RR. A Potentially Volatile Situation. Clin Chem. 2019 Apr; 65 (4):598-599
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  20. Langman LJ, Jannetto PJ, Sztajnkrycer MD. Unidentified anion gap metabolic acidosis. Clin Biochem. 2019 Mar; 65:53-54 Epub 2018 Dec 19
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  21. Snozek CLH, Langman LJ, Cotten SW. An Introduction to Drug Testing: The Expanding Role of Mass Spectrometry. Methods Mol Biol. 2019; 1872:1-10
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  22. Danso D, Langman LJ, Jannetto PJ. Targeted Opioid Screening Assay for Pain Management Using High-Resolution Mass Spectrometry. Methods Mol Biol. 2019; 1872:41-50
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  23. Bjergum MW, Jannetto PJ, Langman LJ. Simultaneous Determination of Tacrolimus and Cyclosporine A in Whole Blood by Ultrafast LC-MS/MS. Methods Mol Biol. 2019; 1872:111-118
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  24. Jannetto PJ, Langman LJ, Bornhorst J. Till Death Do Us Part. Clin Chem. 2018 Oct; 64 (10):1548-1549
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  25. Wang L, Bernert JT, Benowitz NL, Feng J, Jacob P 3rd, McGahee E, Caudill SP, Scherer G, Scherer M, Pluym N, Doig MV, Newland K, Murphy SE, Caron NJ, Sander LC, Shimizu M, Yamazaki H, Kim S, Langman LJ, Pritchett JS, Sniegoski LT, Li Y, Blount BC, Pirkle JL. Collaborative Method Performance Study of the Measurement of Nicotine, Its Metabolites, and Total Nicotine Equivalents in Human Urine. Cancer Epidemiol Biomarkers Prev. 2018 Sep; 27 (9):1083-1090 Epub 2018 May 31
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  26. Snozek CLH, Kaleta EJ, Jannetto PJ, Linkenmeyer JJ, Harnish TL, Stephen J, Langman LJ. False-positive amphetamine results on several drug screening platforms due to mexiletine. Clin Biochem. 2018 Aug; 58:125-127. Epub 2018 May 23.
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  27. Sargel CL, Aboud M, Forster A, Langman LJ, Tansmore J, Mueller BA, Smoyer WE, Auletta JJ. Intravenous Ribavirin for Parainfluenza and Respiratory Syncytial Virus in an Infant Receiving Extracorporeal Membrane Oxygenation and Continuous Renal Replacement Therapy. J Pediatr Pharmacol Ther. 2018 Jul-Aug; 23 (4):337-342
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  28. Greaves RF, Smith JM, Beastall G, Florkowski C, Langman L, Sheldon J, Theodorsson E. The IFCC Curriculum - phase 1. EJIFCC. 2018 Apr; 29 (1):55-93 Epub 2018 Apr 30
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  29. Jannetto PJ, Langman LJ. Using Clinical Laboratory Tests to Monitor Drug Therapy in Pain Management Patients. J Appl Lab Med. 2018 Jan 1; 2 (4):471-472
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  30. Jannetto PJ, Bratanow NC, Clark WA, Hamill-Ruth RJ, Hammett-Stabler CA, Huestis MA, Kassed CA, McMillin GA, Melanson SE, Langman LJ. Executive Summary: American Association of Clinical Chemistry Laboratory Medicine Practice Guideline-Using Clinical Laboratory Tests to Monitor Drug Therapy in Pain Management Patients. J Appl Lab Med. 2018 Jan 1; 2 (4):489-526
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  31. Danso D, Langman LJ, Jannetto PJ. Interference Testing and Isobaric Compounds: Is Your Mass Spectrometry-based Assay as Good as You Think It Is? J Appl Lab Med. 2018 Jan 1; 2 (4):666-668
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  32. Krieger CA, Cunningham JL, Reid JM, Langman LJ, Grothe KB, Clark MM, Dierkhising RA. Comparison of Bioavailability of Single-Dose Extended-Release Venlafaxine Capsules in Obese Patients Before and After Gastric Bypass Surgery. Pharmacotherapy. 2017 Nov; 37 (11):1374-1382 Epub 2017 Oct 10
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  33. Basu A, Slama MQ, Nicholson WT, Langman L, Peyser T, Carter R, Basu R. Continuous Glucose Monitor Interference With Commonly Prescribed Medications: A Pilot Study. J Diabetes Sci Technol. 2017 Sep; 11 (5):936-941 Epub 2017 Mar 23
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  34. Nitsche JF, Patil AS, Langman LJ, Penn HJ, Derleth D, Watson WJ, Brost BC. Transplacental Passage of Acetaminophen in Term Pregnancy. Am J Perinatol. 2017 May; 34 (6):541-543 Epub 2016 Nov 02
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  35. Klein JA, Langman LJ. Prevention of Surgical Site Infections and Biofilms: Pharmacokinetics of Subcutaneous Cefazolin and Metronidazole in a Tumescent Lidocaine Solution. Plast Reconstr Surg Glob Open. 2017 May; 5 (5):e1351 Epub 2017 May 30
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  36. Mbughuni MM, Jannetto PJ, Langman LJ. Mass Spectrometry Applications for Toxicology. EJIFCC. 2016 Dec; 27 (4):272-287 Epub 2016 Dec 01
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  37. Langman LJ, Jannetto PJ. Individualizing Immunosuppressive Therapy for Transplant Patients. Clin Chem. 2016 Oct; 62 (10):1302-3 Epub 2016 Aug 18
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  38. Mok CC, Penn HJ, Chan KL, Tse SM, Langman LJ, Jannetto PJ. Hydroxychloroquine Serum Concentrations and Flares of Systemic Lupus Erythematosus: A Longitudinal Cohort Analysis. Arthritis Care Res (Hoboken). 2016 Sep; 68 (9):1295-302 Epub 2016 July 27
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  39. Jannetto PJ, Langman LJ. High-throughput online solid-phase extraction tandem mass spectrometry: Is it right for your clinical laboratory? Clin Biochem. 2016 Sep; 49: (13-14)1032-4.
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  40. Langman LJ, Nesher L, Shah DP, Azzi JM, Shpall EJ, Rezvani K, Black JL 3rd, Chemaly RF. Challenges in Determining Genotypes for Pharmacogenetics in Allogeneic Hematopoietic Cell Transplant Recipients. J Mol Diagn. 2016 Sep; 18 (5):638-642 Epub 2016 June 29
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  41. Ice LL, Barreto JN, Dao BD, Wolf RC, Dierkhising RA, Jannetto PJ, Langman LJ, Tosh PK. Relationship of Sulfamethoxazole Therapeutic Drug Monitoring to Clinical Efficacy and Toxicity: A Retrospective Cohort Study. Ther Drug Monit. 2016 Jun; 38 (3):319-26
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  42. Shipkova M, Hesselink DA, Holt DW, Billaud EM, van Gelder T, Kunicki PK, Brunet M, Budde K, Barten MJ, De Simone P, Wieland E, Lopez OM, Masuda S, Seger C, Picard N, Oellerich M, Langman LJ, Wallemacq P, Morris RG, Thompson C, Marquet P. Therapeutic Drug Monitoring of Everolimus: A Consensus Report. Ther Drug Monit. 2016 Apr; 38 (2):143-69
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  43. Seger C, Shipkova M, Christians U, Billaud EM, Wang P, Holt DW, Brunet M, Kunicki PK, Pawinski T, Langman LJ, Marquet P, Oellerich M, Wieland E, Wallemacq P. Assuring the Proper Analytical Performance of Measurement Procedures for Immunosuppressive Drug Concentrations in Clinical Practice: Recommendations of the International Association of Therapeutic Drug Monitoring and Clinical Toxicology Immunosuppressive Drug Scientific Committee. Ther Drug Monit. 2016 Apr; 38: (2)170-89.
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  44. Langman LJ, Danso D, Robert E, Jannetto PJ. High-Throughput Quantitation of Busulfan in Plasma Using Ultrafast Solid-Phase Extraction Tandem Mass Spectrometry (SPE-MSMS). Methods Mol Biol. 2016; 1383:89-95.
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  45. Christians U, Vinks AA, Langman LJ, Clarke W, Wallemacq P, van Gelder T, Renjen V, Marquet P, Meyer EJ. Impact of Laboratory Practices on Interlaboratory Variability in Therapeutic Drug Monitoring of Immunosuppressive Drugs. Ther Drug Monit. 2015 Dec; 37: (6)718-24.
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  46. Nitsche J, Langman LJ, Penn HJ, Derleth D, Watson W, Brost B. Effect of Acetaminophen on Fetal Activity. Am J Perinatol. 2015 Nov; 32: (13)1277-80.
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  47. Danso D, Jannetto PJ, Enger R, Langman LJ. High-Throughput Validated Method for the Quantitation of Busulfan in Plasma Using Ultrafast SPE-MS/MS. Ther Drug Monit. 2015 Jun; 37 (3):319-24
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  48. Korman E, Langman LJ, Jannetto PJ. High-throughput method for the quantification of lacosamide in serum using ultrafast SPE-MS/MS. Ther Drug Monit. 2015 Feb; 37 (1):126-31
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  49. Petrides AK, Moskowitz J, Johnson-Davis KL, Jannetto PJ, Langman LJ, Clarke W, Marzinke MA. The development and validation of a turbulent flow-liquid chromatography-tandem mass spectrometric method for the simultaneous quantification of citalopram, sertraline, bupropion and hydroxybupropion in serum. Clin Biochem. 2014 Oct; 47 (15):73-9 Epub 2014 Aug 01
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  50. Stauble ME, Moore AW, Langman LJ, Boswell MV, Baumgartner R, McGee S, Metry J, Jortani SA. Hydrocodone in postoperative personalized pain management: pro-drug or drug? Clin Chim Acta. 2014 Feb 15; 429:26-9. Epub 2013 Nov 21
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  51. Beatty NC, Nicholson WT, Langman LJ, Curry TB, Eisenach JH. Pharmacogenetic workup of perioperative serotonin syndrome. J Clin Anesth. 2013 Dec; 25 (8):662-5 Epub 2013 Oct 01
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  52. Langman LJ, Korman E, Stauble ME, Boswell MV, Baumgartner RN, Jortani SA. Therapeutic monitoring of opioids: a sensitive LC-MS/MS method for quantitation of several opioids including hydrocodone and its metabolites. Ther Drug Monit. 2013 Jun; 35 (3):352-9
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  53. Boswell MV, Stauble ME, Loyd GE, Langman L, Ramey-Hartung B, Baumgartner RN, Tucker WW, Jortani SA. The role of hydromorphone and OPRM1 in postoperative pain relief with hydrocodone. Pain Physician. 2013 May-Jun; 16(3):E227-35.
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  54. Stemland CJ, Witte J, Colquhoun DA, Durieux ME, Langman LJ, Balireddy R, Thammishetti S, Abel MF, Anderson BJ. The pharmacokinetics of methadone in adolescents undergoing posterior spinal fusion. Paediatr Anaesth. 2013 Jan; 23(1):51-7. Epub 2012 Sep 14.
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  55. Sokumbi O, el-Azhary RA, Langman LJ. Therapeutic dose monitoring of mycophenolate mofetil in dermatologic diseases. J Am Acad Dermatol. 2013 Jan; 68: (1)36-40.
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  56. Snozek CL, Bjergum MW, Langman LJ. Cocaine and metabolites by LC-MS/MS. Methods Mol Biol. 2012; 902:91-103.
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  57. Korman EW, Langman LJ, Snozek CL. Hypoglycemic agent screening by LC-MS/MS. Methods Mol Biol. 2012; 902:149-56.
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  58. Danso D, Langman LJ, Snozek CL. LC-MS/MS quantitation of ribavirin in serum and identification of endogenous isobaric interferences. Clin Chim Acta. 2011 Nov 20; 412(23-24):2332-5. Epub 2011 Aug 03.
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  59. Penn HJ, Langman LJ, Unold D, Shields J, Nichols JH. Detection of synthetic cannabinoids in herbal incense products. Clin Biochem. 2011 Sep; 44 (13):1163-1165 Epub 2011 June 29
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  60. Grafft C, Gunderson H, Langman L, Farmer JC, Leung N. High-dose continuous venovenous hemofiltration combined with charcoal hemoperfusion for methotrexate removal. NDT Plus. 2011 Apr; 4 (2):87-9 Epub 2011 Feb 24
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  61. McAlpine DE, Biernacka JM, Mrazek DA, O'Kane DJ, Stevens SR, Langman LJ, Courson VL, Bhagia J, Moyer TP. Effect of cytochrome P450 enzyme polymorphisms on pharmacokinetics of venlafaxine. Ther Drug Monit. 2011 Feb; 33 (1):14-20
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  62. Dasgupta A, Langman LJ, Johnson M, Chow L. Naproxen metabolites interfere with certain bilirubin assays: elimination of interference by using a Roche bilirubin assay on the Hitachi 917 analyzer. Am J Clin Pathol. 2010 Jun; 133(6):878-83.
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  63. Snozek CL, Rollins LA, Peterson PW, Langman LJ. Comparison of a new serum topiramate immunoassay to fluorescence polarization immunoassay. Ther Drug Monit. 2010 Feb; 32 (1):107-11
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  64. Snozek CL, Bjergum MW, Langman LJ. Gas chromatography-mass spectrometry method for the determination of methadone and 2-ethylidene-1,5-dimethyl-3, 3-diphenylpyrrolidine (EDDP). Methods Mol Biol. 2010; 603:351-8.
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  65. Langman LJ, Hammett-Stabler CA, Collins JA. CLSI publishes guidelines for gas chromatography/mass spectrometry confirmation of drugs. Laboratory medicine. 2010; 41(9):563-4.
  66. Bernert JT, Jacob P, Holiday DB, Benowitz NL, Sosnoff CS, Doig MV, Feyerabend C, Aldous KM, Sharifi M, Kellogg MD, Langman LJ. Interlaboratory comparability of serum cotinine measurements at smoker and nonsmoker concentration levels: a round-robin study. Nicotine Tob Res. 2009 Dec; 11(12):1458-66. Epub 2009 Nov 23.
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  67. Langman LJ, Bjergum MW, Williamson CL, Crow FW. Sensitive method for detection of cocaine and associated analytes by liquid chromatography-tandem mass spectrometry in urine. J Anal Toxicol. 2009 Oct; 33 (8):447-55
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  68. Langman LJ, Boakye-Agyeman F. Measurement of voriconazole in serum and plasma. Clin Biochem. 2007 Dec; 40 (18):1378-85 Epub 2007 Aug 16
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  69. Baudhuin LM, Langman LJ, O'Kane DJ. Translation of pharmacogenetics into clinically relevant testing modalities. Clin Pharmacol Ther. 2007 Oct; 82: (4)373-6.
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  70. Langman LJ. The use of oral fluid for therapeutic drug management: clinical and forensic toxicology. Ann N Y Acad Sci. 2007 Mar; 1098:145-66.
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  71. Langman LJ, Kapur BM. Toxicology: then and now. Clin Biochem. 2006 May; 39(5):498-510.
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  72. Miriuka SG, Langman LJ, Evrovski J, Miner SES, Kozuszko S, D'Mello N, Delgado DH, Wong BY, Ross HJ, Cole DEC. Thromboembolism in Heart Transplantation: Role of Prothrombin G20210A and Factor V Leiden. Transplantation. 2005 Sep 15; 80(5):590-594.
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  73. Ray JG, Langman LJ, Mamdani MM, Cole DE. Absence of effect of folic acid flour fortification on anticonvulsant drug levels. Am J Med. 2005 Apr; 118(4):444-5.
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  74. Miriuka SG, Langman LJ, Evrovski J, Miner SE, D'Mello N, Delgado DH, Wong BY, Ross HJ, Cole DE. Genetic polymorphisms predisposing to hyperhomocysteinemia in cardiac transplant patients. Transpl Int. 2005 Jan; 18(1):29-35.
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  75. Langman LJ, Kaliciak HA, Carlyle S. Fatal overdoses associated with quetiapine. J Anal Toxicol. 2004 Sep; 28(6):520-5.
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  76. Miriuka SG, Langman LJ, Keren ES, Miner SES, Mamer OA, Delgado DH, Evrovski J, Ross HJ, Cole DEC. Effects of folic acid fortification and multivitamin therapy on homocysteine and vitamin B12 status in cardiac transplant recipients. J Heart Lung Transplant. 2004; 23(4):405-12.
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  77. Ray JG, Vermeulen MJ, Langman LJ, Boss SC, Cole DEC. Persistence of Vitamin B12 Insufficiency Among Elderly Women After Folic Acid Food Fortification. Clin Biochem. 2003; 36(5):387-91.
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  78. Langman LJ, Kaliciak KA, Boone SA. Fatal Acute Topiramate Toxicity. JAnal Toxicol. 2003; 27(5):323-4.
  79. Ray JG, Langman LJ, Vermeulen MJ, Evrovski J, Yeo EL, Cole DE. Genetics University of Toronto Thrombophilia Study in Women (GUTTSI): genetic and other risk factors for venous thromboembolism in women. Curr Control Trials Cardiovasc Med. 2001; 2(3):141-149.
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  80. Tzakas PAN, Evrovski J, Langman LJ, Cole DEC. The importance of serum proteins in the interpretation of total homocysteine. Revista Bioquimia. 2001; 26(3):49-53.
  81. Langman LJ, Ray JG, Yeo E, Cole DEC. Hyperhomocyst(e)inemia and the increased risk of venous thromboembolism: more evidence from a case-control study. Arch Int Med. 2000; 160(7):961-4.
  82. Langman LJ, Cole DEC. Homocysteine: cholesterol of the 90's. Clin Chem Acta. 1999; 286:63-80.
  83. Langman LJ, Cole DEC. Homocysteine. CRC Crit Rev Biochem. 1999; 36(4):365-406.
  84. Langman LJ, Allen LC. An enzymatic method for oxalate automated using the Hitachi 911 analyzer. Clin Biochem. 1998; 31(5):429-32.
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  85. Langman LJ, Allen LC, Romaschin AD. Interference of IgM paraproteins in the Olympus AU800 uric acid assay. Clin Biochem. 1998; 31(7):517-21.
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  86. Cole DEC, Ross HJ, Evrovski J, Langman LJ, Miner SES, Daly PA, Wong PY. Correlation between total homocysteine and Cyclosporine concentrations in cardiac transplant recipients. Clin Chem. 1998; 44(11):2307-12.
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  87. Langman LJ, Nakakura H, Thliveris JA, LeGatt DF, Yatscoff RW. Pharmacodynamic monitoring of mycophenolic acid in rabbit heterotopic heart transplant model. Ther Drug Monit. 1997; 19(2):146-52.
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  88. Langman LJ, Shapiro AMJ, Lakey JRT, LeGatt DF, Kneteman NM, Yatscoff RW. Pharmacodynamic assessment of mycophenolic acid induced immunosuppression by measurement of inosine monophosphate dehydrogenase in a canine model. Transplant. 1996; 61(1):87-92.
  89. Langman LJ, Shapiro AMJ, Lakey JRT, LeGatt DF, Kneteman NM, Yatscoff RW. Pharmacodynamic monitoring of mycophenolic acid in a canine model. Transplant Proc. 1996; 28(2):934-6.
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  90. Langman LJ, LeGatt DF, Halloran PF, Yatscoff RW. Pharmacodynamic assessment of mycophenolic acid-induced immunosuppression in renal transplant recipients. Transplant. 1996; 62(5):666-72.
  91. Yatscoff RW, Langman LJ, LeGatt DF. Pharmacodynamic monitoring of immunosuppressive drugs. Transplant Proc. 1996; 28(6):3013-5.
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  92. Langman LJ, LeGatt DF, Yatscoff RW. Pharmacodynamic assessment of mycophenolic acid induced immunosuppression by measurement of IMP dehydrogenase activity. Clin Chem. 1995; 41(2):295-9.
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  93. Yatscoff RW, Langman LJ, LeGatt DF. Therapeutic drug monitoring of Cyclosporin G. Ther Drug Monit. 1995; 17(6):655-9.
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  94. Langman LJ, Leichtman A, Weitzel W, Yatscoff RW. Steady state concentration of Cyclosporin G(OG37-352) and its metabolites in renal transplant recipients. Clin Chem. 1994; 40(4):613-6.
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  95. Langman LJ, LeGatt DF, Yatscoff RW. Comparison of the effects of Cyclosporin G (OG37-325), Cyclosporin A, and their metabolites on the release of endothelin and prostacyclin from primary renal and aortic endothelial cell lines. Ther Drug Monit. 1994; 16(5):450-7.
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  96. Langman LJ, Yatscoff RW. The effect of Cyclosporin G (OG37-325), Cyclosporin A, and their metabolites on the release of vasoactive substances from primary renal cell lines. Transplant Proc. 1994; 26(5):3002-5.
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  97. Langman LJ, LeGatt DF, Yatscoff RW. Blood distribution of mycophenolic acid. Ther Drug Monit. 1994; 16(6):602-7.
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  98. Yatscoff RW, Langman LJ, LeGatt DF. Cross-reactivities of Cyclosporin G (NVa2-Cyclosporin) and metabolites in Cyclosporin A immunoassays. Clin Chem.. 1993; 39: (6)1089-92.
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