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.

Testosterone Blood Test infographic showing hormone roles, causes of low testosterone, and normal range in men and women.

Testosterone Blood Test – Purpose, Procedure, Normal Range, and Result Meaning

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The Testosterone Blood Test measures the level of the primary male sex hormone, testosterone, in your blood. This hormone supports reproductive health, muscle mass, bone density, mood, and sexual function in both men and women. The test helps diagnose hormonal imbalances, infertility, erectile dysfunction, and conditions like PCOS or hypogonadism. Morning samples are preferred for accurate results, and normal testosterone ranges differ for men and women.

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Infographic showing Estradiol (E2) blood test details, key hormone functions, and normal ranges in men and women on a professional navy-blue medical background.

Estradiol (E2) Blood Test – Normal Range, Function, and Hormonal Importance

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The Estradiol (E2) blood test measures estrogen levels in the blood to assess fertility, menstrual health, and hormone balance. It helps diagnose conditions like PCOS, menopause, and ovarian disorders. Learn about normal ranges, functions, and causes of high or low estradiol levels.

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Infographic on Prolactin hormone showing its main functions: produced by the pituitary gland, supports milk production after childbirth, and regulates fertility and menstrual health.

Prolactin (PRL) Test – Function, Normal Range, and Causes of High & Low Levels

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The Prolactin test measures the level of prolactin hormone in the blood. It helps evaluate fertility, menstrual irregularities, and pituitary gland disorders. Learn about its function, normal ranges, and causes of high or low prolactin in both men and women.

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Infographic showing key details about the FSH (Follicle-Stimulating Hormone) test, its reproductive functions, and normal range values on a clean, minimal medical-style background.

FSH (Follicle-Stimulating Hormone) Test – Normal Range, Function, and Causes

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The FSH test measures the Follicle-Stimulating Hormone level in the blood. It helps assess fertility, menstrual cycle disorders, and pituitary or gonadal function. Learn about FSH function, normal ranges, and causes of high or low FSH in both men and women.

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Infographic showing low and high TSH symptoms with icons — tiredness, weight gain, anxiety, heartbeat — on a blue medical background with “Abnormal TSH?” highlighted below.

TSH (Thyroid Stimulating Hormone) Test – Normal Range, Function, and Complete Guide

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The TSH test measures thyroid-stimulating hormone in your blood to assess thyroid function. It helps diagnose hypothyroidism and hyperthyroidism, monitor treatment, and detect pituitary issues. Learn about its role, causes of high or low TSH, and normal reference ranges.

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FT4 (Free Thyroxine) infographic showing causes of high and low FT4 levels with normal range, thyroid test information, and simple medical layout.

FT4 (Free Thyroxine) Test – Normal Range, Function, Symptoms, and Complete Guide

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The FT4 test measures the free thyroxine hormone level in your blood. It helps detect thyroid disorders like hypothyroidism and hyperthyroidism. Learn about its function, causes of abnormal levels, symptoms, reference range, and how the test is performed.

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FT3 (Free Triiodothyronine) test infographic comparing 4 symptoms of low FT3 and 4 symptoms of high FT3 with neat alignment and realistic medical icons in a clean beige-blue background.

FT3 (Free Triiodothyronine) Test – Normal Range, Function, and Causes of High & Low Levels

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The FT3 (Free Triiodothyronine) test measures the active thyroid hormone in your blood. It helps diagnose thyroid disorders such as hyperthyroidism or hypothyroidism. Learn about normal ranges, causes, and symptoms of high or low FT3 levels and how it reflects your thyroid health.

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Professional medical infographic showing T4 (Thyroxine) test with two causes and two symptoms each for low and high T4 levels, featuring neat icons and a clean, blue-orange design.

T4 (Thyroxine) Test – Normal Range, Function, Causes of High & Low T4 Explained

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The T4 (Thyroxine) test measures the level of thyroid hormone in the blood to assess thyroid function. Learn about normal ranges, causes, and symptoms of high or low T4 levels, and the importance of T4 in regulating metabolism and overall health.

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Clean, professional T3 test infographic comparing low vs high T3 levels with realistic thyroid-related icons, showing symptoms like fatigue, weight change, rapid heartbeat, and heat intolerance.

T3 (Triiodothyronine) Test – Normal Range, Function, High & Low T3 Levels Explained

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The T3 (Triiodothyronine) test measures active thyroid hormone levels to evaluate thyroid function. Learn about its normal range, function, causes, and symptoms of high and low T3. This test helps diagnose hypothyroidism, hyperthyroidism, and other thyroid-related disorders.

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