Who We Are

Vision: “To be the leaders in specialized clinical diagnostics.”

Mission: “Our mission at Virant Diagnostics is to perform the highest quality specialized testing solutions by being prompt, competent, trustworthy and respectful to our customers.”

Our Core Values

Virant Diagnostics, Inc is a specialty laboratory that provides a comprehensive menu of tests through locally and Nationally, including testing services in the areas of infectious disease, allergy & immunology, diagnostic genetics, gastrointestinal health, women’s health, oncology, endocrinology, toxicology, pharmacogenetics and medical drug monitoring.

Our highly educated and trained staff will competently execute the highest quality and innovative testing fast test result completion turnaround times that will meet and exceed expectations, providing clear and concise reports that contribute to the medical decision making process. We are CLIA and COLA certified.

Our Knowledgeable, Compassionate and Dedicated Team

H. Henry Li, MD, PhD

President, Chief Executive Officer, Laboratory Director

Dr. Li is board-certified in Allergy/Immunology and Internal Medicine. He completed his Allergy/Immunology Fellowship at Johns Hopkins and received his PhD in Medical Microbiology and Immunology at the University of Texas Medical Branch at Galveston, Texas – where he was awarded the McLaughlin Fellowship Award for excellence in research. Dr. Li has published a number of papers in the field of Allergy/Immunology and rare genetic diseases including peer-reviewed journals, book chapters. He also runs a clinical trials unit in his Allergy/Immunology clinical practice at the Institute for Asthma & Allergy.  His focus is asthma, allergy, rhinitis, immunodeficiencies, hereditary angioedema and patient education.

J. Joanna Yu, MD, PhD

Chief Operations Officer, General Laboratory Supervisor

Dr. Yu is board-certified in Endocrinology and Metabolism, completing her fellowship at the National Institute of Health (NIH). She obtainer her Ph.D. in molecular biology at the University of Texas. Dr. Yu’s goal for the laboratory is to focus on making all aspects of the customer and client experience pleasant, customized and precise. She enjoys tennis, taichi, yoga, photography, reading, cooking and travel. Favorite Quote – “Imagination is the beginning of creation. You imagine what you desire, you will what you imagine and at last you create what you will.”

Lili Wan, PhD

Chief Scientific Officer

Dr. Lili Wan received her PhD in 2001 from the University of Pennsylvania in Cell and Molecular Biology. She obtained her B.S. in Biochemistry in 1993 from St. Michael’s College, VT, where she graduated magna cum laude. She also studied Biochemistry at Nanjing University, China. As a clinical researcher and a cell and molecular biologist she has 15+ years of management experience for clinical trials (specializing in allergy and immunology) and laboratory research (specializing in RNA-protein biology, neurodegenerative diseases and translational research).  She is also the Director of Clinical Research at the Institute for Asthma & Allergy, MD and at Virant Diagnostics.

Shaobin Hou, PhD

Chief Technical Officer

Dr. Shaobin Hou received his MS and PhD in Microbiology at the University of Hawaii and a biology degree at Nankai University. Dr. Hou also served as the Lead Scientist in the Genomic department at the University of Hawaii at Manoa. He has multiple peer-review publications in the areas of molecular biology and microbiology.  His extensive bench research experience and sound grasp of modern laboratory technology has established a solid foundation for the development of various testing platforms at Virant Diagnostics. His spends his spare time reading and is an avid professional tennis fan and player.

Joseph Chiao, MD

Chief Medical Officer

Dr. Joe Chiao completed his Anatomical and Clinical Pathology residency at Jefferson University and completed his fellowships in Cytopathology and Clinical Microbiology at the University of Florida. He was a tenure-track Assistant Professor in the Department of Pathology at the University of Florida-Jacksonville prior to joining the Pharmaceutical industry where he worked in Medical Affairs and Clinical Research roles for drug and medical device development. His clinical and industry background is complementary in contributing to the expertise of the entire Virant Diagnostics laboratory staff in knowledge, function and excellence in execution. Joe’s hobbies and interests includes following Formula One Racing, the NFL Jacksonville Jaguars, New York Yankees and repairing vintage pinball machines.

Kusumam Joseph, PhD


Dr. Kusumam Joseph received her Doctorate in biochemistry from the University of Pune, India and her Nursing degree at Trident Technical College in Charleston, South Caroline. She served as an Associate Professor in the Department of Biochemistry and Molecular Biology at the Medical University of South Carolina, where she was involved in the multiple funded applied research as the Principal Investigator. Her teaching responsibilities at MUSC included biochemistry, molecular biology and genetics. She holds a US patent for an assay that determines the levels of plasma protease C1 inhibitor and has multiple peer reviewed scientific and medical journal publications. Her pharmaceutical industry roles include working in Medical Affairs, Clinical Development and Regulatory Affairs for companies such as BioCryst and Shire Pharmaceuticals (now Takeda). Dr. Joseph will be working on various complement and angioedema related in-vitro assays for Virant Diagnostics.

Baby George Tholanikunnel, PhD


Dr. Baby Tholanikunnel has worked as a scientist and researcher at Stony Brook University and the Medical University of South Carolina. He is an experienced Biochemist and Molecular Biologist and has received several research grants that include the American Heart Association and National Institute of Health during his academic tenures. He has more than 30 peer-reviewed publications in prestigious journals such as the “Journal of Biological Chemistry” and “Proceeding of the National Institute of Sciences, USA”, as well as several review articles and book chapters. At Virant Diagnostics, Dr. Tholanikunnel will head the complement and immunoassay sections. He enjoys gardening and hiking in his spare time.

Yunkou Wu, PhD

Executive Director, Toxicology & Proteomics

Dr. Yunkou Wu received his Doctorate Degree in Chemistry at Dalian University of Technology, China. His previous work experience includes at UT Southwestern as a Senior Research Scientist, at Howard University as an Assistant Professor in Department of Radiology and most recently at Johns Hopkins PET Radiotracer Center as a Chemist and Researcher. He has a long working history (>15 years) in translational research from preclinical drug development to clinical drug trials.  He has extensive experience in preclinical drug development, drug design and synthesis, radiosynthesis, polymer synthesis, cell culture and assays, in vitro & in vivo toxicology testing, and developing new PET drugs for IND applications. Dr. Yunkou Wu has multiple scientific peer-reviewed publications and has also served as an editorial board member and a peer reviewer to  evaluate pharmacology and toxicology results in many scientific papers. Dr. Wu will lead the department of toxicology and proteomics and will look to develop new preclinical and clinical diagnostic assays.

Areas of Focus

Affiliated Clinical Lab Resources

Institute for Asthma and Allergy, founded more than 30 years ago, is a leader in the field of allergy and clinical immunology. Its clinical laboratory is a high complexity CLIA and CAP certified laboratory.  Led by H. Henry Li, MD, PhD, a prominent clinical immunologist with extensive experience in clinical and diagnostic immunology.