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Reverse T3ng/dL

Reverse T3 is an inactive form of T3. It is not part of routine thyroid testing.

See your own Reverse T3 on its range.

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What Reverse T3 measures

Reverse T3 is an inactive form of T3. It is not part of routine thyroid testing.

If your Reverse T3 is low

Low reverse T3 is rarely notable.

Worth asking your clinician: Nothing specific.

If your Reverse T3 is high

Reverse T3 above the range is commonly associated with illness, fasting or stress on the body; its clinical use is debated.

Commonly associated with

Worth asking your clinician: How the standard thyroid tests look.

Typical reference range

GroupTypical range
Adults9.2 – 24.1 ng/dL

Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.

If it is within range

Your reverse T3 is within the range printed by your lab.

Also listed as

T3, Reverse, Reverse T3, Serum, rT3, T3 REVERSE

Related tests

This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.