FREE THYROXINE INDEX

Also known as: FT4I

What you need to know about study FREE THYROXINE INDEX

Sample type Serum or plasma
Delivery time 8 hours
Do I need to fast? Sí

What is this study and what is it for?

Estimate of the amount of circulating free thyroxine (free thyroxine index) using total thyroxine and thyroid binding capacity (T uptake).

What type of sample is needed?

Serum or plasma

Preparation / Instructions

4-hour fast, Includes determination of Total T4

Delivery time

8 hours

Get a quote or receive guidance

If you need assistance with a quote, please complete the form and our team will follow up with you:

    Schedule medical tests online

    Schedule your appointment for a time that works best for you, without needing to visit the hospital beforehand.

    Schedule a study

    The information published on this site is for informational and educational purposes. It is not a substitute for medical consultation, professional diagnosis, or treatment prescribed by a specialist. If you have any questions regarding symptoms, test results, or laboratory studies, please consult your doctor.