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Latest content about Tests

Ferritin Blood Test: Normal Levels, What Results Mean (High & Low)

Ferritin is a protein that stores iron in the body. A ferritin test helps check for high or low iron levels, anemia, inflammation or infection, and results can vary by age and sex.

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Holter Monitor Test: What It Tests, How It'd Done & Results

A holter monitor test records heart rhythm and heart rate over 24 hours or longer to help detect arrhythmias, atrial fibrillation, cardiac ischemia, and causes of symptoms like palpitations, chest pain, dizziness, or shortness of breath.

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Cardiac Catheterization: What It Is, Procedure & Risks

Cardiac catheterization uses a thin tube guided to the heart to diagnose or treat heart problems, such as blocked arteries, arrhythmias, valve disease, and complications after a heart attack.

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MCH Blood Test: Normal Range, Low & High Results Explained

MCH blood test measures hemoglobin in red blood cells, with adult reference ranges of 27–33 pg. High or low MCH may help identify anemia linked to iron deficiency, vitamin B12 or folate deficiency, thyroid disorders, or alcohol use.

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How to Check Blood Sugar: Steps & Reference Values

How to test blood sugar with a fingerstick meter, including step-by-step testing, target reference values, signs of low blood sugar, and ways to help manage glucose levels.

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Squamous Epithelial Cells: What They Are & Causes of High Amounts

Squamous epithelial cells are flat cells found in urine, Pap tests and tissue samples. High or abnormal results may suggest contamination, infection, inflammation or cell changes.

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Urinalysis: What It Checks & Reference Values

Urinalysis is a laboratory test used to assess urine for signs of urinary tract infections, kidney disease, and other health conditions. It evaluates factors such as appearance, pH, glucose, protein, blood, and nitrites.

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RDW Blood Test: What High & Low Results Mean (+ Normal Range)

Learn what a high or low RDW blood test result means, the normal range (11.5–14.5%), and which conditions cause abnormal levels. Reviewed by our medical team.

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Low MCH: What It Means, Causes, Normal Range & Treatment

Low MCH means red blood cells have less hemoglobin than normal. Learn what low MCH may indicate, including iron deficiency anemia, thalassemia and chronic disease, plus ranges, test results and treatment options.

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C-Reactive Protein (CRP): What Levels Mean

C-reactive protein (CRP) is a liver-made protein that rises with inflammation or infection. High or low CRP levels may help assess infections, chronic disease, and heart disease risk.

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Home Pregnancy Test: How & When to Take One

A home pregnancy test checks urine for hCG, a hormone that rises in early pregnancy. Results are most reliable after a missed period and may be positive, negative, false negative, or false positive depending on timing and use.

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SPECT Scan: What It Is & How It Works

SPECT brain imaging helps assess blood flow and brain function, supporting the diagnosis or monitoring of neurological conditions like dementia, epilepsy, stroke, and Parkinson’s disease.

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Red Blood Cells: Normal Range & What Results Mean

Red blood cells carry oxygen, help remove carbon dioxide, and support blood pH balance. High or low RBC levels may be linked to anemia, bleeding, nutrient deficiencies, kidney disease, or other conditions.

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MCHC Blood Test: Reference Values & What Results Mean

The MCHC blood test measures hemoglobin concentration in red blood cells. High or low MCHC levels may be linked to anemia, thyroid changes, medication interactions, or excessive alcohol intake.

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Reticulocyte Test: How It’s Done & What Results Mean

Reticulocyte testing measures young red blood cells to help evaluate bone marrow function and possible causes of anemia, including hemolytic anemia and iron deficiency anemia.