LabInformationLab tests, explained

Thyroid Test Panel with TSH in California

Below is a plain-language overview of the thyroid test panel with tsh. A thyroid test panel with TSH checks how well your thyroid gland is working. It is often ordered when you have symptoms like fatigue, weight changes, or a lump in the neck, or to monitor thyroid treatment. California residents in Pacific can request the thyroid test panel with tsh online and choose a convenient collection point.

Sample type
blood
Category
Thyroid
Turnaround
1-3 business days
Price
$118
Referral
Not required

A thyroid test panel with TSH checks how well your thyroid gland is working. It is often ordered when you have symptoms like fatigue, weight changes, or a lump in the neck, or to monitor thyroid treatment.

What it measures

  • TSH (thyroid-stimulating hormone) — A hormone from the pituitary gland that tells the thyroid to work. High TSH often means an underactive thyroid; low TSH may mean an overactive one.
  • Free T4 (thyroxine) — The main thyroid hormone in your blood. It helps control energy and metabolism.
  • Free T3 (triiodothyronine) — The active form of thyroid hormone. It affects how your body uses energy.
  • Thyroid peroxidase antibodies (TPO Ab) — Antibodies that can attack the thyroid. Their presence may suggest an autoimmune thyroid condition.

Who it is for

A doctor or other clinician typically orders this panel if you have symptoms of a thyroid problem, an abnormal finding on an exam, or if you are already taking thyroid medication and need monitoring.

Preparation

No fasting is usually required. Tell your clinician about any medicines or supplements you take, because some can affect thyroid test results.

Results and what they mean

Results are reported as numbers with reference ranges. Your clinician interprets them along with your symptoms and history. This is general information, not medical advice; only a qualified professional can diagnose or treat a thyroid condition.

Requesting the Thyroid Test Panel with TSH in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. Access across Pacific is uneven, so confirming a site ahead of time is worthwhile.

Frequently asked questions

Do I need to fast for this test?

No, fasting is not typically needed. You can eat and drink normally unless your clinician gives other instructions.

How long until I get results?

Most labs return results in 1 to 3 business days. Your clinician's office will contact you about the next steps.

Can I take my thyroid medicine before the test?

Ask your clinician. Some people take their dose after the blood draw, but follow your clinician's specific instructions.

What if my TSH is high or low?

A high or low TSH can have several causes. Your clinician will consider your symptoms and other test results to decide what it means for you.

Thyroid Test Panel with TSH by city in California

All testing in California →   Full Thyroid Test Panel with TSH guide →