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 35

Learn how tumor molecular profiling finds DNA, RNA, protein, and genomic biomarkers to guide cancer diagnosis, targeted treatment, resistance assessment, and next steps.

Tumor Molecular Profiling Test: Cancer Mutations, Treatment Targets, and Results

Understand how a tumor mutational burden test reports mutations per megabase, what TMB-high may mean for immunotherapy, why assays differ, and how to interpret limitations.

Tumor Mutational Burden (TMB) Test: Cancer Immunotherapy Marker and Results

Learn what a VHL genetic test shows, how von Hippel-Lindau syndrome affects multiple organs, and how positive, negative, mosaic, and VUS results guide surveillance.

VHL Genetic Test: von Hippel-Lindau Syndrome, Cancer Risk, and Results

Understand what a WT1 genetic test can reveal about Wilms tumor risk, progressive kidney disease, gonadal development, screening, inheritance, and result interpretation.

WT1 Genetic Test: Wilms Tumor, Kidney Cancer Risk, and Results

Learn how the acetaminophen blood test is used after overdose, what toxic levels can mean, when NAC treatment is needed, and which liver and kidney labs guide follow-up.

Acetaminophen Blood Test: Toxic Level, Overdose, Liver Damage Risk, Treatment Monitoring,...

Interpret acetaminophen levels and liver enzymes by timing, nomogram risk, ALT, AST, INR, bilirubin, symptoms, and kidney markers to understand overdose danger and treatment urgency.

Acetaminophen Level and Liver Enzymes: Interpreting Overdose Risk

Learn what an aluminum blood test measures, normal and high aluminum ranges, common exposure sources, toxicity symptoms, dialysis risks, false high results, and follow-up steps.

Aluminum Blood Test: High Aluminum, Normal Range, Toxicity, Exposure Sources, and...

Understand the antimony blood test, including normal range, high antimony causes, exposure sources, toxicity symptoms, blood vs urine testing, and follow-up care.

Antimony Blood Test: High Antimony, Exposure, Toxicity, Normal Range, and Results

Learn what an arsenic blood test measures, what high arsenic can mean, normal range basics, poisoning symptoms, urine testing, exposure sources, and follow-up steps.

Arsenic Blood Test: High Arsenic, Normal Range, Poisoning, Toxicity, and Results

Learn when urine arsenic testing is preferred over blood testing, why arsenic speciation matters, how seafood affects total arsenic, and what abnormal results can mean.

Arsenic Blood Test vs Urine Test: Which Exposure Test Is Used?

Learn what a beryllium blood test measures, how high beryllium and BeLPT results are interpreted, what exposure sources matter, and when follow-up testing is needed.

Beryllium Blood Test: High Beryllium, Exposure, Toxicity, Normal Range, and Results

Learn what a bismuth blood test measures, what high bismuth can mean, common exposure sources, toxicity symptoms, normal range issues, and when urgent care is needed.

Bismuth Blood Test: High Bismuth, Exposure, Toxicity, Normal Range, and Results

Learn how blood alcohol, methanol, ethylene glycol, and isopropanol results are interpreted with osmolal gap, anion gap, acidosis, symptoms, and urgent treatment decisions.

Blood Alcohol, Methanol, and Ethylene Glycol: Interpreting Toxic Alcohol Panels

Learn what a blood drug screen test checks, how long common drugs stay detectable in blood, what positive and negative results mean, and when confirmation testing matters.

Blood Drug Screen Test: Common Drugs, Positive Results, Detection Window, and...

Understand how blood lead and hemoglobin results fit together, why lead can contribute to anemia, which CBC patterns matter, and when follow-up testing or urgent care is needed.

Blood Lead and Hemoglobin: Interpreting Anemia and Lead Exposure

Learn what a blood lead test measures, what high lead levels mean, CDC reference values, poisoning symptoms, exposure sources, confirmatory testing, and follow-up steps.

Blood Lead Test: High Lead Level, Normal Range, Lead Poisoning, Toxicity,...

Learn how admium blood and urine tests, eGFR, creatinine, albumin-creatinine ratio, and tubular markers help interpret heavy metal kidney risk and follow-up needs.

Cadmium and Kidney Markers: Interpreting Heavy Metal Kidney Risk

Learn what a cadmium blood test measures, what high cadmium results can mean, typical ranges, exposure sources, toxicity risks, and follow-up testing.

Cadmium Blood Test: High Cadmium, Normal Range, Exposure, Toxicity, and Results

Understand the carbamazepine blood test, including the 4–12 mcg/mL therapeutic range, toxic levels, trough timing, high and low results, seizure medication monitoring, and urgent toxicity symptoms.

Carbamazepine Blood Test: Therapeutic Range, Toxic Level, Seizure Medication Monitoring, and...

Learn how carbamazepine, phenytoin, and valproic acid levels are interpreted, including therapeutic ranges, toxic patterns, timing issues, free vs total levels, and follow-up testing.

Carbamazepine, Phenytoin, and Valproic Acid: Interpreting Seizure Medication Levels

1...343536...74 Page 35 of 74