/

Thyroid Function

8 biomarkers

Thyroid Function

TSH, free T3 and T4 plus antibodies — answers for fatigue, weight changes and more.

From $79

Results in 48 hours


Most thyroid testing stops at TSH, which can look perfectly normal while the rest of the picture is not. We run the full panel, antibodies included, so an autoimmune pattern shows up early.


Reading the whole panel


Free T3 and Free T4 show what your body can actually use. Antibodies show whether your immune system is involved. Together they explain symptoms a single number can’t.


A physician reviews every thyroid result and flags anything that should go to an endocrinologist.

What’s included

TSH

Free T4

Free T3

TPO antibodies

Thyroglobulin antibodies

Reverse T3

From $79

8 biomarkers

Turnaround

Results in 48 hours

Sample

One blood draw

Preparation

No fasting needed

Best for

Fatigue, weight changes and hair loss

Book this test

Same-day slots at 340+ partner labs.

Still deciding which panel fits?

Our care team will read your history and point you to the right test — no charge, no pressure.

Talk to an advisor

FAQ

Questions,
answered.

Everything you need to know about testing, results and your plan. Tap a question to open it.

Still have questions?

Our care team replies within a few hours, seven days a week.

Talk to a care advisor

How is Lubrix different from my annual checkup?

A typical physical checks around 20 markers. Lubrix tests 150+ biomarkers, and a licensed physician reviews every result with you and turns it into a clear, personalized plan.

Do I need to fast before my blood test?

For most panels, yes — fast for 8–10 hours beforehand. Water is fine and makes the draw easier. We’ll send exact instructions for your test when you book.

How soon will I get my results?

Most results are ready within 48 hours of your sample reaching the lab. You’ll get a notification the moment your doctor-reviewed report is live.

Can I collect my sample at home?

Yes. Choose an at-home visit and a certified phlebotomist comes to you, or book a walk-in slot at one of our partner labs nearby.

Is my health data private and secure?

Always. Your data is encrypted, stored on HIPAA-compliant infrastructure and never sold. You decide who can see your results.

Does insurance cover Lubrix?

Lubrix is a direct-pay service with upfront pricing. Many members use HSA or FSA funds, and we provide an itemized receipt for reimbursement.

How is Lubrix different from my annual checkup?

A typical physical checks around 20 markers. Lubrix tests 150+ biomarkers, and a licensed physician reviews every result with you and turns it into a clear, personalized plan.

Do I need to fast before my blood test?

For most panels, yes — fast for 8–10 hours beforehand. Water is fine and makes the draw easier. We’ll send exact instructions for your test when you book.

How soon will I get my results?

Most results are ready within 48 hours of your sample reaching the lab. You’ll get a notification the moment your doctor-reviewed report is live.

Can I collect my sample at home?

Yes. Choose an at-home visit and a certified phlebotomist comes to you, or book a walk-in slot at one of our partner labs nearby.

Is my health data private and secure?

Always. Your data is encrypted, stored on HIPAA-compliant infrastructure and never sold. You decide who can see your results.

Does insurance cover Lubrix?

Lubrix is a direct-pay service with upfront pricing. Many members use HSA or FSA funds, and we provide an itemized receipt for reimbursement.

Create a free website with Framer, the website builder loved by startups, designers and agencies.