Chief Resident
Clinical Pathology, UTHealth, Houston, TX 1993
Clinical Pathology, UTHealth, Houston, TX 1993
University of Texas Medical Branch, Galveston, TX, 1989
Mechanical Engineering, University of Houston, Houston, TX, 1983
Mechanical Engineering, University of Houston, Houston, TX, 1980

Areas of Interests

Clinical Interests

Hematopathology, Coagulation, and Pathology Informatics

Research Interests

Hematopathology, Coagulation, and Pathology Informatics

Research Information

–          Benign and malignant hematopathology

–          Coagulopathy in various clinical settings

–          Application of pathology informatics in decision-support systems


Publication Information

Selected Peer-reviewed Publications (most recent):

Richard S.P. Huang, MD; Elena Nedelcu, MD; Yu Bai, MD; Amer Wahed, MD; Kimberly Klein, MD; Igor Gregoric, MD; Manish Patel, MD; Biswajit Kar; Pranav Loyalka, MD; Sriram Nathan, MD; Paul Loubser, MD; Phillip A. Weeks, PharmD, Rajko Radovancevic, MD; Andy N.D. Nguyen, MD. Mobile Computing Platform with Decision-support Modules for Hemotherapy. Am J Clin Pathol. 2014 Jun;141(6):834-40. PMID: 24838328


Kerry J. Welsh, Elena Nedelcu, Yu Bai, Amer Wahed , Kimberly Klein, Hlaing Tint, Igor Gregoric, Manish Patel, Biswajit Kar, Pranav Loyalka, Sriram Nathan, Paul Loubser, Phillip A. Weeks, Rajko Radovancevic, Andy N.D. Nguyen. How do we manage cardiopulmonary bypass coagulopathy? Transfusion, Sep;54(9):2158-66. PMID: 24942083


Andres Quesada, MD; Christine Jabcuga, MD; Amer Wahed, MD; Elena Nedelcu, MD; Andy N.D. Nguyen, MD. Interpretation of Coagulation Tests using a Web-based reporting system. Lab Med, 2014 Fall;45(4):347-60. PMID: 25316668


Kerry J. Welsh, Angelica Padilla, Amitava Dasgupta, Andy N.D. Nguyen, and Amer Wahed. Thromboelastography is a suboptimal test for determination of the underlying cause of bleeding associated with cardiopulmonary bypass. Am J Clin Pathol. 2014 Oct;142(4):492-7. PMID: 25239416


Richard S.P. Huang, Amitava Dasgupta, Andy N.D. Nguyen, Amer Wahed. Inability to measure m-protein with capillary zone electrophoresis (CAPPILLARYS 2) in tracings with nondiscernable peaks.  J Clin Lab Anal. 2014 Aug 17. PMID: 25130914


Deanna Alicia Oleske, Richard Sheng Poe Huang, Amitava Dasgupta, Andy Nguyen, Amer Wahed. Higher sensitivity of capillary electrophoresis in detecting hemoglobin A2′ compared to traditional gel electrophoresis. Ann Clin Lab Sci. 2014 Summer;44(3):291-3. PMID: 25117100


Andres E. Quesada, Robert E. Brown, Adan Rios, and Nghia D. Nguyen. Expression of NFκB/mTORC Pathway Proteins and Response to CHOP plus Bortezomib in a Patient with Angioimmunoblastic Peripheral T-cell Lymphoma. Clin Lymphoma Myeloma Leuk. 2014 Sep;14 Suppl:S87-9. PMID: 25486962


Richard S.P. Huang, Elena Nedelcu, Yu Bai,  Amer Wahed,  Kimberly Klein, Hlaing Tint, Igor Gregoric,  Manish Patel, Biswajit Kar ,Pranav Loyalka, Sriram Nathan,  Rajko Radovancevic,  Andy N.D. Nguyen. Post-Operative Bleeding Risk Stratification in Cardiac Pulmonary Bypass Patients Using Artificial Neural Network. Ann Clin Lab Sci. 2015 Spring;45(2):181-6. PMID: 25887872


Richard S.P. Huang, Mark M. McDonald, Jeremy S. Wetzel, Jorge Kawano-Castillo, Stephanie Parker, Joancy Archeval-Lao, Chunyan Cai, Andy N.D. Nguyen, James C. Grotta. Clot Strength as Measured by Thrombelastography Correlates with Platelet Reactivity in Stroke Patients. Ann Clin Lab Sci. 2015 Spring;45(3):301-7. PMID: 26116594


Andres E. Quesada, Nghia D. Nguyen, Adan Rios, and Robert E. Brown. Morphoproteomics Identifies Constitutive Activation of the mTORC2/Akt and NF-κB  Pathways and Expressions of IGF-1R, Sirt1, COX-2, and FASN in Peripheral T-cell Lymphomas: Pathogenetic Implications and Therapeutic Options. Int J Clin Exp Pathol. 2014 Dec 1;7(12):8732-9. PMID: 25674239


Andres Quesada, Ashok Tholpady, Brian Chang, Audrey Wanger, Andy Nguyen, Lei Chen. Utility of Bone Marrow examination for workup of fever of unknown origin in HIV patients. J Clin Pathol. 2015 Mar;68(3):241-5. PMID: 25589792.


Kerry J. Welsh, Elena Nedelcu, Amer Wahed, Yu Bai, Amitava Dasgupta, and Andy N.D. Nguyen. Bioinformatics analysis to determine prognostic mutations of 72 de novo acute myeloid leukemia cases from The Cancer Genome Atlas (TCGA) with 23 most common mutations and no abnormal cytogenetics.  Annals of Clinical & Laboratory Science. Volume 45, # 5 (September – October) 2015 (in press).


Kerry J. Welsh MD, PhD; Amitava Dasgupta, PhD; Andy N.D. Nguyen, MD; and Amer Wahed, MD. Utility of VerifyNow for point-of-care identification of an aspirin effect prior to emergency cardiac surgery. Ann Clin Lab Sci. 2015 Jul;45(4):377-81. PMID: 26275687


Semyon A. Risin, Brian N. Chang, Kerry J. Welsh, Laura R. Kidd, Vanessa Moreno, Lei Chen, Ashok Tholpady, Amer Wahed, Nghia Nguyen, Marylee Kott, and Robert L. Hunter.  Exploring New Ways to Deliver Value to Healthcare Organizations: Algorithmic Testing, Data Integration, and Diagnostic E-consult Service. Ann Clin Lab Sci. 2015 Spring;45(3):239-47. PMID: 26116586


Andrés E. Quesada, Binara Assylbekova, Christine Jabcuga,  Rongzhen Zhang, Michael Covinsky,  Adan Rios, Nghia D. Nguyen, Robert E. Brown. The Expression of  Sirt1 and FoxP3 in Classical Hodgkin Lymphoma and Tumor Infiltrating Lymphocytes: Implications for Immune Dysregulation and Potential Therapeutic Targeting. Int J Clin Exp Pathol. In press


Preetesh Jain, Suhair  Salihi, Rodrigo Hasbun, Charles D Ericsson, Renee Flores, Harinder S Juneja, Nghia D. Nguyen, and Modupe Idowu. Disseminated cytomegalovirus (CMV)-associated hemophagocytic lymphohistiocytosis (HLH) in an elderly patient. Journal – Blood Research as a letter to editor. In press


Lei Chen, MD; Kerry J. Welsh, MD, Ph.D; Binh Nguyen, MD; Marylee Kott, MD; Mohammad Zare, MD; Kelley Carroll, MD; Andy Nguyen, MD;  Amer Wahed, MD, Laura Kidd, M.D; Vanessa Moreno, M.D; Norin Pung, CLS, MBA; Donna McKee, RN, Ashok Tholpady, MD; Brian Chang, MD;  Semyon Risin, MD, Ph.D; Robert Hunter, MD, Ph.D. Algorithmic approach with clinical pathology consultation improves access to specialty care for systemic lupus erythematosus patients.American Journal of Clinical Pathology. In press


Sophie Samuel PharmD, BCPS, Teresa A Allison PharmD, BCPS, Sherouk Sharaf, PharmD, Gin Yau, PharmD, Ghazaleh Rnajbar, PharmD, Natalie Mckaig, PharmD, Huimahn A Choi, MD, Andy Nguyen, MD, Miguel Escobar, MD. Antifactor Xa Levels versus Activated Partial Thromboplastin Time for Monitoring Unfractionated Heparin. Which One to Believe? A Pilot Study. Journal of Clinical Pharmacy and Therapeutics. In press



Nguyen, A. and Henry, J.: Principles of Instrumentation. Chapter 3, In: Henry, J., ed. Clinical Diagnosis and Management by Laboratory Methods. Philadelphia: W.B. Saunders, 2001, 20th Edition, 2001, pp 60-78.


Nguyen, A.: The Application of Data Mining to Flow Cytometry. In: Current Protocols in Cytometry (Eds: Robinson, J.P., Darzynkiewicz, Z., Dean, P. et al). John Wiley & Sons, Inc, April 2002, 10.13.1-10.13.6

Nguyen, A. Wahed. Chapter 20.Sources of errors in hematology and coagulation testing. In: Accurate Results in the Clinical Laboratory-A Guide to Error Detection and Correction, Editors: A. Dasgupta, J. Sepulveda. Elsevier, 2013.




Andy Nguyen, M.D, Amitava Dasgupta, Ph.D, Amer Wahed, M.D. Current Management of Hemostasis and Coagulopathies for Surgical and Critically Ill Patients: a Practical Approach. Elsevier, 1st edition (May 16, 2016), ISBN-10: 0128035315


Research Support:

Thromboelastogram and Platelet Function Monitoring in Patients Supported by a Continuous Flow Left Ventricular Assist Device (Co Investigator). S. Nathan, A. Nguyen, R. Radovancevic, B. Kar, P. Loyalka, I. Gregoric. University of Texas Grant $35,000 (May 2014-May 2016)


Acquired Von Willebrand Syndrome in Left Ventricular Assist Device Patients (Co Investigator). Sriram Nathan, Nghia D. Nguyen, Igor D. Gregoric, Bisjawit Kar, Rajko Radovancevic. University of Texas Grant $35,000

( May 2014-May 2016)

Additional Information


American Board of Pathology, Clinical Pathology

American Board of Pathology, Hematopathology


Helen Chu Wagner Award for Scholastic Achievement in Pathology Residency (6/1993)

Award for Excellence in Clinical Pathology Teaching (2000-2001)

Award for Excellence in Clinical Pathology Teaching (2001-2002)

Award for Excellence in Clinical Pathology Teaching (2003-2004)

Dean’s Teaching Excellence Award (2006-2007)

Award for Excellence in Clinical Pathology Teaching (2006-2007)

Dean’s Teaching Excellence Award 2011-2012

Dean’s Teaching Excellence Award 2012-2013

Dean’s Teaching Excellence Award 2014-2015

Dean’s Teaching Excellence Award 2015-2016