What Blood Tests Should I Get for Night Sweats?

The best blood tests for night sweats are TSH, FSH, estradiol, CBC with differential, fasting glucose, and cortisol. Hyperthyroidism and perimenopause are the most common hormonal causes. These tests also screen for infections, blood disorders, and blood sugar abnormalities.

Possible Causes

HyperthyroidismPerimenopauseType 2 Diabetes

Recommended Tests

TSH

$8

Measures thyroid-stimulating hormone to evaluate thyroid function. TSH is the most sensitive marker for detecting thyroi...

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Free T4

$8

Measures the unbound, active form of the thyroid hormone T4. Helps assess thyroid function and diagnose thyroid conditio...

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FSH

$10

Measures FSH levels important for reproductive function and fertility assessment.

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Estradiol

$12

Measures the primary form of estrogen. Important for reproductive health in both men and women.

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CBC w/ Diff

$5

Comprehensive blood cell analysis including red cells, white cells, platelets, and white cell differential.

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Fasting Glucose

$6

Measures blood sugar levels after fasting. Used to screen for diabetes and monitor blood sugar control.

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Total Cortisol

$13

Measures total cortisol levels to assess adrenal function and stress response.

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When to See a Doctor

If your night sweats is severe, rapidly worsening, or accompanied by alarming symptoms (chest pain, shortness of breath, high fever), seek immediate medical attention. Blood tests are a valuable first step, but they don't replace evaluation by a healthcare professional.

Frequently Asked Questions

Related Symptoms

InsomniaAnxietyFatigueIrregular Periods

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Content reviewed for accuracy by the JustLabs editorial team.