TSH
The first-line thyroid screen β the single most sensitive marker of thyroid function. One quick draw, results usually in 1β2 business days.
TSH (thyroid-stimulating hormone) is the pituitary's signal that tells your thyroid how much hormone to make. Because it rises or falls before thyroid hormone levels change, TSH is the single most sensitive first-line test for detecting an under- or over-active thyroid.
Included Tests
What This Panel Measures
Who Should Get This Panel
- You have fatigue, weight changes, or temperature sensitivity
- You want a simple, sensitive thyroid check
- You have a family history of thyroid disease
- You're on thyroid medication and monitoring your dose
- You want a routine wellness screen
Conditions Screened
Related Symptoms
When to Get Tested
Any time; no fasting is required. If you take thyroid medication, test at a consistent time relative to your dose so results are comparable across visits.
Understanding Your Results
Results post to your secure online account usually in 1β2 business days, with your value and the normal range. A high TSH points toward an underactive thyroid and a low TSH toward an overactive one. If TSH is abnormal, adding Free T4 helps confirm and characterize the issue.
Frequently Asked Questions
Do I need to fast?
My TSH is abnormal β what next?
Is this billed to insurance?
Pairs Well With β Same Blood Draw
Test centers donβt accept payment β you pay securely here; the lab just does the draw.
What happens after you order?
- 1Your lab order form & test code appear in your secure online account β with your test centerβs address.
- 2We send your lab requisition to the test center electronically.
- 3Walk in & get tested β tests usually take 5 minutes or less.