CYFRA 21-1 Test (Cytokeratin 19 Fragment) – Purpose, Normal Range & High Levels Explained
Learn about the CYFRA 21-1 Test for lung cancer, its normal range, causes of high levels, and how it helps monitor treatment response.
Explore All Tests
Explore All Tests contains an organized collection of laboratory test articles — blood, urine, stool, disease-specific and uncategorized tests — explained clearly for patients and students.
Cyclosporine A (CsA) Test – Purpose, Normal Range, and Toxicity Signs Explained
Learn about the Cyclosporine A Test (CsA Monitoring), its purpose, normal range, and how it prevents transplant rejection or toxicity.
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Cryptococcal Antigen (CrAg) Test – Purpose, Procedure, Normal & Positive Results Explained
Learn about the Cryptococcal Antigen (CrAg) Test – its purpose, normal and positive results, and how it helps detect fungal meningitis in HIV patients early.
Cryoglobulins (Cryoglobulin Screen / Cryoproteins Test): Meaning, Causes, and Results Explained
Learn about the Cryoglobulins Test, what it detects, why it’s done, causes of positive results, and how cryoglobulinemia affects health.
C-Peptide Test: Meaning, Normal Range, High & Low Levels Explained
Learn what the C-Peptide Test is, why it’s done, normal ranges, and what high or low C-peptide levels mean for diabetes and insulin production.
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Indirect Coombs Test (IAT) – Purpose, Procedure, Positive & Negative Results Explained
Learn about the Indirect Coombs Test (IAT) – its purpose, uses in transfusion and pregnancy, and what positive or negative results mean for health and safety.
Indirect Coombs Test (IAT) – Purpose, Procedure, Positive & Negative Results Explained Read More »
Direct Coombs Test (DAT) – Purpose, Results, Normal & Positive Levels Explained
Understand what the Direct Coombs Test (DAT) means, why it’s done, and what positive or negative results indicate in anemia, transfusion, or newborn disease.
Direct Coombs Test (DAT) – Purpose, Results, Normal & Positive Levels Explained Read More »
C-Reactive Protein (CRP) Test – Purpose, High & Low Levels, Symptoms, and Results Explained
Understand what the C-Reactive Protein (CRP) test means, its normal and high levels, symptoms, causes, and how it helps detect inflammation or heart disease.
Cortisol Test – Purpose, Normal Range, Symptoms, and Result Meaning
The Cortisol Test measures cortisol levels in blood, urine, or saliva to assess adrenal and stress hormone balance. Learn about normal ranges, symptoms of high or low cortisol, and related disorders like Cushing’s or Addison’s disease.
Cortisol Test – Purpose, Normal Range, Symptoms, and Result Meaning Read More »
Complement C4 Blood Test – Purpose, Normal Range, and Result Meaning
The Complement C4 Blood Test measures C4 protein levels to assess immune activity and diagnose autoimmune or inflammatory diseases. Learn about normal ranges, causes of high or low levels, and what results mean.
Complement C4 Blood Test – Purpose, Normal Range, and Result Meaning Read More »