Latest

Learn how HLA-DR and CD38 flow cytometry measures activated T cells, what high results may mean, why ranges vary, and how clinicians plan follow-up.

Activated T-Cell Marker Test: HLA-DR, CD38, Immune Activation, and Inflammation

Understand how CD19 and CD20 B-cell counts are measured, why results may be high or low, how anti-CD20 therapy affects them, and which follow-up tests assess antibody function.

B-Cell Count Test: CD19, CD20, Immune Function, and Antibody Production

Learn what a CD4 count measures, how HIV affects helper T cells, what common ranges and thresholds mean, why results fluctuate, and how the test guides monitoring and infection prevention.

CD4 Count Test: Helper T Cells, Immune Function, HIV Monitoring, and Meaning

Learn how the CD4/CD8 ratio is calculated, what low or high results may mean, why an inverted ratio is nonspecific, and how the test adds context in HIV and immune monitoring.

CD4/CD8 Ratio Test: Immune Balance, High and Low Ratio, and Meaning

Learn what a CD8 count measures, why cytotoxic T-cell numbers may rise or fall, how viral infections affect results, and why cell quantity does not equal antiviral function.

CD8 Count Test: Cytotoxic T Cells, Immune Function, and Viral Response

Understand what a chemokine panel measures, why immune-signaling and cell-migration markers rise or fall, and how specialists interpret patterns and limitations.

Chemokine Panel Test: Immune Signaling, Inflammation, and Cell Migration Markers

Diagnostics

Home Diagnostics Page 31

Learn how monogenic obesity testing for MC4R, LEP, LEPR, POMC, and related genes works, what results mean, and when findings may guide treatment.

Monogenic Obesity Genetic Test: MC4R, LEP, LEPR, POMC, and Results

Understand MTHFR C677T and A1298C results, their relationship to homocysteine and folic acid, and why common variants rarely change clot or pregnancy care.

MTHFR Genetic Test: C677T, A1298C, Homocysteine, and Clinical Meaning

Learn when neonatal diabetes genetic testing for KCNJ11, ABCC8, INS, 6q24, and other causes can change treatment, prognosis, and family care.

Neonatal Diabetes Genetic Test: KCNJ11, ABCC8, INS, and Results

Learn how PCSK9 gain- and loss-of-function variants affect LDL cholesterol, familial hypercholesterolemia, heart risk, treatment, and family testing.

PCSK9 Genetic Test: Cholesterol, Heart Disease Risk, and Results

Understand how a coronary artery disease polygenic risk score estimates heart attack susceptibility, what percentiles mean, and how results fit with clinical prevention.

Polygenic Risk Score (PRS) for Coronary Artery Disease: Heart Attack Risk...

Learn what an obesity polygenic risk score can reveal about inherited BMI susceptibility, childhood trajectories, ancestry limits, and clinical interpretation.

Polygenic Risk Score (PRS) for Obesity: Genetic Risk, BMI, and Results

Understand how a type 2 diabetes polygenic risk score estimates inherited susceptibility, what results mean, and how genetics fits with screening and prevention.

Polygenic Risk Score (PRS) for Type 2 Diabetes: Genetic Risk and...

Learn what a prothrombin G20210A result means for venous blood clot risk, anticoagulation, pregnancy, hormones, surgery, and family testing.

Prothrombin G20210A Genetic Test: Blood Clot Risk and Results

Learn how restrictive cardiomyopathy genetic testing evaluates heart-muscle genes, distinguishes inherited disease from mimics, and guides result interpretation and family care.

Restrictive Cardiomyopathy Genetic Test: Heart Muscle Genes and Results

Understand how short QT syndrome genetic testing evaluates heart rhythm genes, why ECG context and gene validity matter, and what positive, uncertain, or negative results mean.

Short QT Syndrome Genetic Test: Heart Rhythm Genes and Results

Learn how thoracic aortic aneurysm genetic testing evaluates FBN1, TGFBR1, TGFBR2, and other HTAD genes and how results guide imaging, surgery, and family care.

Thoracic Aortic Aneurysm Genetic Test: FBN1, TGFBR1, TGFBR2, and Results

Learn when thrombophilia genetic testing for factor V Leiden and prothrombin G20210A is useful, how other clotting tests differ, and what results mean for care.

Thrombophilia Genetic Test: Factor V Leiden, Prothrombin G20210A, and Results

Learn how COL3A1 genetic testing confirms vascular Ehlers-Danlos syndrome, how variant types affect interpretation, and how results guide surveillance, emergencies, and family care.

Vascular Ehlers-Danlos Syndrome Genetic Test: COL3A1 Gene and Results

Learn how ATP7B genetic testing fits into Wilson disease diagnosis, how copper tests and variant results are interpreted, and how treatment and family screening prevent injury.

Wilson Disease Genetic Test: ATP7B, Copper Metabolism, and Results

Understand what an ALK mutation test detects in lung cancer, how tissue and liquid biopsy results are interpreted, and how ALK-positive findings guide targeted therapy.

ALK Mutation Test: Lung Cancer, Targeted Therapy, and Results

Learn what an APC genetic test can show, how positive, negative, and uncertain results are interpreted, and how FAP findings guide colon surveillance, surgery, and family testing.

APC Genetic Test: Familial Adenomatous Polyposis, Colon Cancer Risk, and Results

Understand what an ASXL1 mutation test shows in blood and bone marrow, how results relate to myeloid neoplasms and clonal hematopoiesis, and how they affect prognosis and follow-up.

ASXL1 Mutation Test: Blood Cancer, Myeloid Neoplasm, and Results

Learn what an ATM genetic test shows, how positive, negative, and uncertain results affect breast and other cancer risk, and how screening and family testing are planned.

ATM Genetic Test: Breast Cancer Risk, DNA Repair, and Results

Learn what a BAP1 genetic test shows, how results relate to melanoma, mesothelioma, and kidney cancer risk, and how surveillance and family testing are planned.

BAP1 Genetic Test: Melanoma, Mesothelioma, Kidney Cancer Risk, and Results

Understand what a BCL2 rearrangement test shows, how results support follicular lymphoma diagnosis, and why concurrent MYC and BCL2 rearrangements identify double-hit lymphoma.

BCL2 Rearrangement Test: Follicular Lymphoma, Double-Hit Lymphoma, and Results

1...303132...74 Page 31 of 74