Lab Test Explainers
Understand your blood work. Plain-language reference guides for common biomarkers, lab tests, and reference ranges.
Blood Cells & CBC
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Detox & Elimination
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What Does Low Albumin Mean? Causes and Your Albumin vs Globulin Ratio
Learn what low albumin says about your liver, kidneys and inflammation. Understand the causes of low serum albumin and how to read your albumin vs globulin ratio.
What Does Alkaline Phosphatase Mean? Causes of High and Low ALP
Understand your alkaline phosphatase (ALP) blood test. Learn the causes of high and low ALP, liver vs bone differences, and normal ranges by age.
Bilirubin Levels Explained: What Does High Bilirubin Mean?
Wondering what high bilirubin means? Learn the causes of elevated bilirubin levels, jaundice, and what direct versus indirect test results reveal about your liver.
What Does a High BUN to Creatinine Ratio Mean?
Learn what a high BUN to creatinine ratio tells you about your kidney health, why dehydration matters, and when to consult a doctor about your lab results.
eGFR Blood Test Meaning: Understanding Your Kidney Health Results
Learn the meaning of your eGFR blood test results, what normal kidney function ranges look like by age, and how lifestyle factors impact your scores.
Heart & Circulation
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Hematocrit Blood Test Explained: What High and Low Results Mean
Learn what your hematocrit blood test results mean. Understand the difference between dehydration and polycythemia, and how lifestyle impacts your levels.
What Does High RDW Mean in a Blood Test? Causes and Fatigue Links
A high RDW in your blood test means your red blood cells vary significantly in size. Discover what elevated red cell distribution width means for fatigue and health.
MCV Blood Test Explained: What High and Low Levels Really Mean
Discover what your MCV blood test results mean. Learn the causes behind high MCV (macrocytosis) and low MCV (microcytosis) and how they affect your energy.
RBC Blood Test Explained: Normal Ranges, Highs, and Lows
Understand your red blood cell (RBC) count, including normal ranges for men and women, causes of high and low levels, and when to seek medical advice.
MPV Blood Test Explained: What High and Low Results Mean
Discover what your MPV blood test means. Learn why doctors measure platelet volume, what high or low MPV levels indicate, and how it connects to inflammation.
Platelet Count Explained: Normal Ranges, High vs. Low, and When to Worry
Understand what your platelet count means, the causes behind high and low levels, how inflammation affects your results, and when to consult a doctor.
Hormones
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Immunity & Inflammation
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Iron Studies
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Metabolic
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Vitamins & Nutrients
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Vitamin B12 Levels Meaning: Reference Ranges Explained
Discover the true vitamin B12 levels meaning. Learn why you might experience severe fatigue and brain fog even when your blood test results look perfectly normal.
Vitamin D Levels Meaning: Reference Ranges and Immunity
Understand the meaning of your vitamin D levels. Discover the difference between normal and optimal ranges for immunity, inflammation, and chronic fatigue.