Thyroid Function Test

Evaluates TSH and thyroid hormones to assess thyroid status.

Turnaround: 6-8 hours Sample: Blood

Test Overview

Thyroid function testing helps evaluate whether the thyroid gland is underactive or overactive. It is commonly used in fatigue workup, endocrine review, fertility assessment, and treatment follow-up.

Parameters Measured

TSH

Primary thyroid regulation marker

Normal Range: 0.4-4.0 mIU/L

Free T4

Circulating thyroxine level

Normal Range: 0.8-1.8 ng/dL

Free T3

Active thyroid hormone fraction

Normal Range: 2.3-4.2 pg/mL

When is this test recommended?

Evaluation of fatigue, weight change, or palpitations

Follow-up for known thyroid disease

Assessment during fertility or pregnancy care

Monitoring response to thyroid medication

Preparation Instructions

Preferably collect the sample in the morning.
Inform the lab about thyroid medication use.
Do not stop prescribed medication unless your doctor instructs you to do so.

Sample

Blood

Volume

3 mL serum

Turnaround

6-8 hours

Preparation Note

Morning sampling is preferred for consistency.

Test Code

BIO-163

Need Help?

Our team is available to answer your questions and help you schedule your test.

Frequently
asked questions

What does Thyroid Function Test check? -

Thyroid Function Test helps the laboratory and treating physician review the relevant markers for this test in a clinically structured way.

What sample is needed and how long do results take? +

This test is usually performed on Blood, and results are typically available within 6-8 hours.

Do I need any preparation before Thyroid Function Test? +

Morning sampling is preferred for consistency.

Direction →

Talk to the Alsaleem team

Book a test, ask about turnaround time, or request a partnership walkthrough using this demo contact experience.

Your Name

Phone Number

Message

Address

Rouisat opposite to Alwahda Bank, Benghazi, Libya

Give us a call

+218 91 557 3000

Send us an email

benghazi@alsaleemlabs.com