The Full Thyroid Panel: Which Tests Belong in a Complete Workup
A complete thyroid workup typically starts with TSH and free T4, adds free or total T3 when an overactive thyroid is suspected, and includes…
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Lab Results Explained
Articles that explain laboratory results: what common blood and urine tests measure, what high or low values can mean and which questions to take to your doctor. A single number rarely tells the whole story; results are read together with your symptoms and history.
The Testosterone Test: Total vs Free, Timing, and How to Read It With Your Doctor
A testosterone test measures the hormone in your blood, usually as total testosterone; a free testosterone test estimates the small unbound fraction your tissues…
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The CRP Blood Test: What C-Reactive Protein Tells Your Doctor About Inflammation
A CRP blood test measures C-reactive protein, a substance the liver releases within hours of inflammation anywhere in the body. Most healthy adults measure…
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Thyroid Tests: What TSH, T3 and T4 Mean Together
A thyroid test typically measures TSH, the pituitary signal that controls the thyroid, along with T4 and T3, the hormones the gland makes. High…
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LH and the LH Surge: What the Test Shows for Cycles and Fertility
A luteinizing hormone (LH) test detects the sharp hormonal rise, the LH surge, that triggers ovulation. Ovulation typically follows the start of…
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MPV in a Blood Test: What Platelet Size Reveals and When It Matters
MPV, or mean platelet volume, measures the average size of your platelets: the blood-cell fragments that form clots. It is a routine part…
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MCH: Hemoglobin per Cell and Why It Matters
MCH, or mean corpuscular hemoglobin, is the average amount of oxygen-carrying hemoglobin inside a single red blood cell, reported as part of a complete…
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AST: What This Liver Number Means With and Without ALT
AST (aspartate aminotransferase) is an enzyme measured in routine blood work to help assess liver health, though it also lives in muscle, heart, and…
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ALT: The Liver Enzyme on Every Panel, Explained
ALT (alanine aminotransferase) is an enzyme concentrated in liver cells that helps convert protein into energy. A blood test measures how much has leaked…
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Lipid Panel: Reading Your Cholesterol Results Line by Line
A lipid panel measures four things in your blood: total cholesterol, LDL (often called "bad" cholesterol), HDL ("good" cholesterol), and triglycerides. In general, adults…
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MCV in a Blood Test: What Red-Cell Size Reveals About Anaemia and Your Health
MCV, or mean corpuscular volume, is a standard part of a complete blood count that measures the average size of your red blood cells,…
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MCV in a Blood Test: What Red-Cell Size Reveals About Anaemia and Your Health
MCV, or mean corpuscular volume, is the average size of your red blood cells, taken from a complete blood count. Roughly 80 to 100…
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MPV in a Blood Test: What Platelet Size Reveals and When It Matters
MPV, or mean platelet volume, is a number on a complete blood count that reports the average size of your platelets, measured in femtoliters.…
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MCHC on Your Blood Test: What High and Low Mean
MCHC, or mean corpuscular hemoglobin concentration, measures how densely hemoglobin is packed inside your red blood cells; it appears on a routine complete blood…
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Arterial Blood Gas (ABG) Test: What It Measures, Normal Values and How to Read the Result
An arterial blood gas (ABG) test measures how well the lungs move oxygen into the blood and carbon dioxide out, plus the blood's acid-base…
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Ketones in Urine: What They Mean, Diabetes vs Diet Causes and When to Act Fast
Ketones in urine mean the body is burning fat for fuel instead of glucose. Common, usually harmless causes include fasting, low-carbohydrate diets, prolonged exercise,…
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AST Blood Test (SGOT): Normal Range, High Results and the AST to ALT Ratio Explained
SGOT is the older name for AST, an enzyme released into the blood when liver, muscle or heart cells are damaged. Most labs consider…
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ALT Blood Test (SGPT): Normal Range, What High Results Mean and What to Do Next
The ALT (SGPT) blood test measures an enzyme that leaks from liver cells when they are irritated or damaged. Many labs list roughly 7…
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