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Robert Fitzgerald

Title(s)Professor Of Clinical, Pathology
SchoolHealth Sciences
Phone858-657-5733
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Hubbard JA, Navarrete AL, Fitzgerald RL, McIntyre IM. Acidic Drug Concentrations in Postmortem Vitreous Humor and Peripheral Blood. J Anal Toxicol. 2019 Nov 06. PMID: 31696920.
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    2. Hubbard JA, Smith BE, Sobolesky PM, Kim S, Hoffman MA, Stone J, Huestis MA, Grelotti DJ, Grant I, Marcotte TS, Fitzgerald RL. Validation of a liquid chromatography tandem mass spectrometry (LC-MS/MS) method to detect cannabinoids in whole blood and breath. Clin Chem Lab Med. 2019 Sep 17. PMID: 31527291.
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    3. Bevins NJ, Hubbard JA, Fitzgerald RL, Kelner MJ. A Dilution Method to Mitigate Biotin Interference in Cardiac Troponin T Testing. J Appl Lab Med. 2019 Nov; 4(3):415-421. PMID: 31659079.
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    4. Fitzgerald RL, Hollander JE, Peacock WF, Limkakeng AT, Breitenbeck N, Blechschmidt K, Laimighofer M, deFilippi C. Analytical performance evaluation of the Elecsys® Troponin T Gen 5 STAT assay. Clin Chim Acta. 2019 Aug; 495:522-528. PMID: 31152695.
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    5. Sobolesky PM, Smith BE, Hubbard JA, Stone J, Marcotte TD, Grelotti DJ, Grant I, Fitzgerald RL. Validation of a liquid chromatography-tandem mass spectrometry method for analyzing cannabinoids in oral fluid. Clin Chim Acta. 2019 Apr; 491:30-38. PMID: 30615854.
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    6. Sobolesky PM, Smith BE, Saenger AK, Schulz K, Apple FS, Scott MG, Wu AHB, Little RR, Fitzgerald RL. Multicenter assessment of a hemoglobin A1c point-of-care device for diagnosis of diabetes mellitus. Clin Biochem. 2018 Nov; 61:18-22. PMID: 30236830.
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    7. Stone JA, Fitzgerald RL. Liquid Chromatography-Mass Spectrometry Education for Clinical Laboratory Scientists. Clin Lab Med. 2018 09; 38(3):527-537. PMID: 30115396.
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    8. Kim S, Stephens LD, Fitzgerald RL. How much is too much? Two contrasting cases of excessive vitamin D supplementation. Clin Chim Acta. 2017 Oct; 473:35-38. PMID: 28801091.
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    9. Cheng S, Shah SH, Corwin EJ, Fiehn O, Fitzgerald RL, Gerszten RE, Illig T, Rhee EP, Srinivas PR, Wang TJ, Jain M. Potential Impact and Study Considerations of Metabolomics in Cardiovascular Health and Disease: A Scientific Statement From the American Heart Association. Circ Cardiovasc Genet. 2017 Apr; 10(2). PMID: 28360086.
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    10. Metushi IG, Fitzgerald R, Pesce A. Positive Predictive Value of PCP Immunoassay at UC San Diego Health. J Anal Toxicol. 2017 04 01; 41(3):258. PMID: 28013286.
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    11. Chawla LS, Bellomo R, Bihorac A, Goldstein SL, Siew ED, Bagshaw SM, Bittleman D, Cruz D, Endre Z, Fitzgerald RL, Forni L, Kane-Gill SL, Hoste E, Koyner J, Liu KD, Macedo E, Mehta R, Murray P, Nadim M, Ostermann M, Palevsky PM, Pannu N, Rosner M, Wald R, Zarbock A, Ronco C, Kellum JA. Acute kidney disease and renal recovery: consensus report of the Acute Disease Quality Initiative (ADQI) 16 Workgroup. Nat Rev Nephrol. 2017 04; 13(4):241-257. PMID: 28239173.
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    12. Schneir A, Metushi IG, Fitzgerald RL. U-47700 Reply. Clin Toxicol (Phila). 2017 Jan; 55(1):73. PMID: 27744720.
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    13. Schneir A, Metushi IG, Sloane C, Benaron DJ, Fitzgerald RL. Near death from a novel synthetic opioid labeled U-47700: emergence of a new opioid class. Clin Toxicol (Phila). 2017 Jan; 55(1):51-54. PMID: 27448790.
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    14. Saitman A, Metushi IG, Mason DS, Fitzgerald RL. Evaluation of the Waters MassTrak LC-MS/MS Assay for Tacrolimus and a Comparison to the Abbott Architect Immunoassay. Ther Drug Monit. 2016 06; 38(3):300-4. PMID: 26473523.
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    15. Woods GN, Saitman A, Gao H, Clarke NJ, Fitzgerald RL, Chi NW. A Young Woman With Recurrent Gestational Hypercalcemia and Acute Pancreatitis Caused by CYP24A1 Deficiency. J Bone Miner Res. 2016 10; 31(10):1841-1844. PMID: 27105398.
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    16. Metushi IG, Fitzgerald RL, McIntyre IM. Assessment and Comparison of Vitreous Humor as an Alternative Matrix for Forensic Toxicology Screening by GC-MS. J Anal Toxicol. 2016 May; 40(4):243-7. PMID: 26945835.
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    17. Uettwiller-Geiger DL, Vijayendran R, Kellum JA, Fitzgerald RL. Analytical characteristics of a biomarker-based risk assessment test for acute kidney injury (AKI). Clin Chim Acta. 2016 Apr 01; 455:93-8. PMID: 26797672.
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    18. Chindarkar NS, Chawla LS, Straseski JA, Jortani SA, Uettwiller-Geiger D, Orr RR, Kellum JA, Fitzgerald RL. Reference intervals of urinary acute kidney injury (AKI) markers [IGFBP7]·[TIMP2] in apparently healthy subjects and chronic comorbid subjects without AKI. Clin Chim Acta. 2016 Jan 15; 452:32-7. PMID: 26522657.
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    19. Jannetto PJ, Fitzgerald RL. Effective Use of Mass Spectrometry in the Clinical Laboratory. Clin Chem. 2016 Jan; 62(1):92-8. PMID: 26553795.
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    20. Chindarkar NS, Chawla LS, Straseski JA, Jortani SA, Uettwiller-Geiger D, Orr RR, Kellum JA, Fitzgerald RL. Demographic data for urinary Acute Kidney Injury (AKI) marker [IGFBP7]·[TIMP2] reference range determinations. Data Brief. 2015 Dec; 5:888-92. PMID: 26702417.
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    21. Chindarkar NS, Park HD, Stone JA, Fitzgerald RL. Comparison of Different Time of Flight-Mass Spectrometry Modes for Small Molecule Quantitative Analysis. J Anal Toxicol. 2015 Nov-Dec; 39(9):675-85. PMID: 26239972.
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    22. Saitman A, Estrada J, Fitzgerald RL, McIntyre IM. Comparative analysis of hospital and forensic laboratory ethanol concentrations: A 15 month investigation of antemortem specimens. J Forensic Leg Med. 2015 Jul; 33:23-7. PMID: 26048492.
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    23. O'Connell CW, Sadler CA, Tolia VM, Ly BT, Saitman AM, Fitzgerald RL. Overdose of etizolam: the abuse and rise of a benzodiazepine analog. Ann Emerg Med. 2015 Apr; 65(4):465-6. PMID: 25805032.
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    24. Saitman A, Fitzgerald RL, McIntyre IM. Evaluation and comparison of postmortem hydrocodone concentrations in peripheral blood, central blood and liver specimens: a minimal potential for redistribution. Forensic Sci Int. 2015 Feb; 247:36-40. PMID: 25541075.
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    25. Saitman A, Park HD, Fitzgerald RL. False-positive interferences of common urine drug screen immunoassays: a review. J Anal Toxicol. 2014 Sep; 38(7):387-96. PMID: 24986836.
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    26. Chindarkar NS, Wakefield MR, Stone JA, Fitzgerald RL. Liquid chromatography high-resolution TOF analysis: investigation of MSE for broad-spectrum drug screening. Clin Chem. 2014 Aug; 60(8):1115-25. PMID: 24916795.
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    27. Chindarkar NS, Rentmeester LL, Ly BT, Fitzgerald RL. Black urine due to urobilinogen in a patient with alcoholic pellagra. Clin Biochem. 2014 Aug; 47(12):1132-5. PMID: 24709296.
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    28. Iqbal N, Azar D, Yun YM, Ghausi O, Ix J, Fitzgerald RL. Serum methylmalonic acid and holotranscobalamin-II as markers for vitamin B12 deficiency in end-stage renal disease patients. Ann Clin Lab Sci. 2013; 43(3):243-9. PMID: 23884217.
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    29. Yun YM, Botelho JC, Chandler DW, Katayev A, Roberts WL, Stanczyk FZ, Vesper HW, Nakamoto JM, Garibaldi L, Clarke NJ, Fitzgerald RL. Performance criteria for testosterone measurements based on biological variation in adult males: recommendations from the Partnership for the Accurate Testing of Hormones. Clin Chem. 2012 Dec; 58(12):1703-10. PMID: 23065474.
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    30. Crews BO, Pesce AJ, West R, Nguyen H, Fitzgerald RL. Evaluation of high-resolution mass spectrometry for urine toxicology screening in a pain management setting. J Anal Toxicol. 2012 Nov-Dec; 36(9):601-7. PMID: 22995480.
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    31. Fitzgerald RL, Griffin TL, Yun YM, Godfrey RA, West R, Pesce AJ, Herold DA. Dilute and shoot: analysis of drugs of abuse using selected reaction monitoring for quantification and full scan product ion spectra for identification. J Anal Toxicol. 2012 Mar; 36(2):106-11. PMID: 22337779.
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    32. Maisel AS, Mueller C, Fitzgerald R, Brikhan R, Hiestand BC, Iqbal N, Clopton P, van Veldhuisen DJ. Prognostic utility of plasma neutrophil gelatinase-associated lipocalin in patients with acute heart failure: the NGAL EvaLuation Along with B-type NaTriuretic Peptide in acutely decompensated heart failure (GALLANT) trial. Eur J Heart Fail. 2011 Aug; 13(8):846-51. PMID: 21791540.
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    33. Shah K, Terracciano GJ, Jiang K, Maisel AS, Fitzgerald RL. Comparability of Results between Point-of-Care and Automated Instruments to Measure B-type Natriuretic Peptide. West J Emerg Med. 2010 Feb; 11(1):44-8. PMID: 20411075.
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    34. Fitzgerald RL, Griffin TL, Herold DA. Analysis of testosterone in serum using mass spectrometry. Methods Mol Biol. 2010; 603:489-500. PMID: 20077101.
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    35. Boisot S, Beede J, Isakson S, Chiu A, Clopton P, Januzzi J, Maisel AS, Fitzgerald RL. Serial sampling of ST2 predicts 90-day mortality following destabilized heart failure. J Card Fail. 2008 Nov; 14(9):732-8. PMID: 18995177.
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    36. Waldo SW, Beede J, Isakson S, Villard-Saussine S, Fareh J, Clopton P, Fitzgerald RL, Maisel AS. Pro-B-type natriuretic peptide levels in acute decompensated heart failure. J Am Coll Cardiol. 2008 May 13; 51(19):1874-82. PMID: 18466803.
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    37. Scuderi RT, Griffin TL, Mehta SP, Herold DA, Fitzgerald RL. Interference with hemoglobin A(1C) determination by the hemoglobin variant Shelby. Am J Clin Pathol. 2007 Sep; 128(3):440-4. PMID: 17709318.
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    38. Kwan G, Isakson SR, Beede J, Clopton P, Maisel AS, Fitzgerald RL. Short-term serial sampling of natriuretic peptides in patients presenting with chest pain. J Am Coll Cardiol. 2007 Mar 20; 49(11):1186-92. PMID: 17367663.
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    39. Austin WJ, Bhalla V, Hernandez-Arce I, Isakson SR, Beede J, Clopton P, Maisel AS, Fitzgerald RL. Correlation and prognostic utility of B-type natriuretic peptide and its amino-terminal fragment in patients with chronic kidney disease. Am J Clin Pathol. 2006 Oct; 126(4):506-12. PMID: 16938661.
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    40. Kushnir MM, Rockwood AL, Roberts WL, Pattison EG, Bunker AM, Fitzgerald RL, Meikle AW. Performance characteristics of a novel tandem mass spectrometry assay for serum testosterone. Clin Chem. 2006 Jan; 52(1):120-8. PMID: 16299050.
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    41. Fitzgerald RL, Hillegonds DJ, Burton DW, Griffin TL, Mullaney S, Vogel JS, Deftos LJ, Herold DA. 41Ca and accelerator mass spectrometry to monitor calcium metabolism in end stage renal disease patients. Clin Chem. 2005 Nov; 51(11):2095-102. PMID: 16141289.
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    42. Fitzgerald RL, Cremo R, Gardetto N, Chiu A, Clopton P, Bhalla V, Maisel AS. Effect of nesiritide in combination with standard therapy on serum concentrations of natriuretic peptides in patients admitted for decompensated congestive heart failure. Am Heart J. 2005 Sep; 150(3):471-7. PMID: 16169326.
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    43. O'Dell LE, Alomary AA, Vallée M, Koob GF, Fitzgerald RL, Purdy RH. Ethanol-induced increases in neuroactive steroids in the rat brain and plasma are absent in adrenalectomized and gonadectomized rats. Eur J Pharmacol. 2004 Jan 26; 484(2-3):241-7. PMID: 14744609.
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    44. Herold DA, Fitzgerald RL. Immunoassays for testosterone in women: better than a guess? Clin Chem. 2003 Aug; 49(8):1250-1. PMID: 12881438.
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    45. Alomary AA, Vallée M, O'Dell LE, Koob GF, Purdy RH, Fitzgerald RL. Acutely administered ethanol participates in testosterone synthesis and increases testosterone in rat brain. Alcohol Clin Exp Res. 2003 Jan; 27(1):38-43. PMID: 12544003.
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    46. Lu CM, Burton WD, Fitzgerald RL, Deftos LJ, Buchholz BA, Vogel JS, Herold DA. Mass spectrometric immunoassay for parathyroid hormone-related protein. Anal Chem. 2002 Nov 01; 74(21):5507-12. PMID: 12433080.
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    47. Alomary AA, Fitzgerald RL, Purdy RH. Neurosteroid analysis. Int Rev Neurobiol. 2001; 46:97-115. PMID: 11599313.
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    48. Vallée M, Rivera JD, Koob GF, Purdy RH, Fitzgerald RL. Quantification of neurosteroids in rat plasma and brain following swim stress and allopregnanolone administration using negative chemical ionization gas chromatography/mass spectrometry. Anal Biochem. 2000 Dec 01; 287(1):153-66. PMID: 11078595.
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    49. Chen Z, Fitzgerald RL, Averna MR, Schonfeld G. A targeted apolipoprotein B-38.9-producing mutation causes fatty livers in mice due to the reduced ability of apolipoprotein B-38.9 to transport triglycerides. J Biol Chem. 2000 Oct 20; 275(42):32807-15. PMID: 10893242.
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    50. Fitzgerald RL, Rivera JD, Herold DA. Broad spectrum drug identification directly from urine, using liquid chromatography-tandem mass spectrometry. Clin Chem. 1999 Aug; 45(8 Pt 1):1224-34. PMID: 10430788.
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    51. Azzazy HM, Duh SH, Fitzgerald RL, McLawhon RW, Rosenthal M, Christenson RH. Multisite study of a second generation whole blood rapid assay for cardiac troponin T. Ann Clin Biochem. 1999 Jul; 36 ( Pt 4):438-46. PMID: 10456205.
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    52. Frankel SM, Fitzgerald RL, Sackier JM. Utility of insufflation filters in laparoscopic surgery. Surg Endosc. 1998 Sep; 12(9):1137-40. PMID: 9716767.
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    53. Fitzgerald RL, O'Neal CL, Hart BJ, Poklis A, Herold DA. Comparison of an ion-trap and a quadrupole mass spectrometer using diazepam as a model compound. J Anal Toxicol. 1997 Oct; 21(6):445-50. PMID: 9323524.
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    54. Fitzgerald RL, Herold DA, Yergey AL. Trade-offs in mass spectrometry. Clin Chem. 1997 Jun; 43(6 Pt 1):915. PMID: 9191539.
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    55. Nishikawa T, Ohtani H, Herold DA, Fitzgerald RL. Comparison of assay methods for benzodiazepines in urine. A receptor assay, two immunoassays, and gas chromatography-mass spectrometry. Am J Clin Pathol. 1997 Mar; 107(3):345-52. PMID: 9052386.
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    56. Christenson RH, Fitzgerald RL, Ochs L, Rozenberg M, Frankel WL, Herold DA, Duh SH, Alonsozana GL, Jacobs E. Characteristics of a 20-minute whole blood rapid assay for cardiac troponin T. Clin Biochem. 1997 Feb; 30(1):27-33. PMID: 9056106.
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    57. Fitzgerald RL, Herold DA. Improved CEDIA benzodiazepine assay eliminates sertraline crossreactivity. J Anal Toxicol. 1997 Jan-Feb; 21(1):32-5. PMID: 9013289.
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    58. Fitzgerald RL, Frankel WL, Herold DA. Comparison of troponin-T with other cardiac markers in a VA hospital. Am J Clin Pathol. 1996 Sep; 106(3):396-401. PMID: 8816601.
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    59. Frankel WL, Herold DA, Ziegler TW, Fitzgerald RL. Cardiac troponin T is elevated in asymptomatic patients with chronic renal failure. Am J Clin Pathol. 1996 Jul; 106(1):118-23. PMID: 8701920.
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    60. Fitzgerald RL, Herold DA. Serum total testosterone: immunoassay compared with negative chemical ionization gas chromatography-mass spectrometry. Clin Chem. 1996 May; 42(5):749-55. PMID: 8653902.
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    61. Baird GS, Fitzgerald RL, Aggarwal SK, Herold DA. Determination of blood lead by electron-capture negative chemical ionization gas chromatography-mass spectrometry. Clin Chem. 1996 Feb; 42(2):286-91. PMID: 8595725.
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    62. Herold CD, Fitzgerald RL, Herold DA. Current techniques in mycobacterial detection and speciation. Crit Rev Clin Lab Sci. 1996; 33(2):83-138. PMID: 8744519.
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    63. Zimring HJ, Fitzgerald RL, Engler RL, Ito BR. Intracoronary versus intravenous effects of cocaine on coronary flow and ventricular function. Circulation. 1994 Apr; 89(4):1819-28. PMID: 8149548.
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    64. Fitzgerald RL, Rexin DA, Herold DA. Detecting benzodiazepines: immunoassays compared with negative chemical ionization gas chromatography/mass spectrometry. Clin Chem. 1994 Mar; 40(3):373-80. PMID: 8131270.
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    65. Aggarwal SK, Kinter M, Fitzgerald RL, Herold DA. Mass spectrometry of trace elements in biological samples. Crit Rev Clin Lab Sci. 1994; 31(1):35-87. PMID: 8049033.
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    66. Fitzgerald RL, Rexin DA, Herold DA. Benzodiazepine analysis by negative chemical ionization gas chromatography/mass spectrometry. J Anal Toxicol. 1993 Oct; 17(6):342-7. PMID: 8271780.
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    67. Poklis A, Fitzgerald RL, Hall KV, Saady JJ. EMIT-d.a.u. monoclonal amphetamine/methamphetamine assay. II. Detection of methylenedioxyamphetamine (MDA) and methylenedioxymethamphetamine (MDMA). Forensic Sci Int. 1993 Apr; 59(1):63-70. PMID: 8099337.
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    68. Poklis A, Hall KV, Eddleton RA, Fitzgerald RL, Saady JJ, Bogema SC. EMIT-d.a.u. monoclonal amphetamine/methamphetamine assay. I. Stereoselectivity and clinical evaluation. Forensic Sci Int. 1993 Apr; 59(1):49-62. PMID: 8505029.
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    69. Fitzgerald RL, Fishel CE, Bush LL. Fatality due to recreational use of chlorodifluoromethane and chloropentafluoroethane. J Forensic Sci. 1993 Mar; 38(2):477-83. PMID: 8455004.
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    70. Fitzgerald RL, Ramos JM, Bogema SC, Poklis A. Resolution of methamphetamine stereoisomers in urine drug testing: urinary excretion of R(-)-methamphetamine following use of nasal inhalers. J Anal Toxicol. 1988 Sep-Oct; 12(5):255-9. PMID: 3226121.
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    71. Ramos JM, Fitzgerald RL, Poklis A. MDMA and MDA cross reactivity observed with Abbott TDx amphetamine/methamphetamine reagents. Clin Chem. 1988 May; 34(5):991. PMID: 2897259.
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