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Reference Guide
  /  
ZRT Laboratory
  /  
Free Thyroxine (fT4)

Free Thyroxine (fT4)

By 
ZRT Laboratory
Free Thyroxine (fT4)
ZRT Laboratory
Vibrant & Rupa Partnership Ended Feb 1st.
Vibrant Wellness & America are no longer available on platforms like Rupa, but we’ve created a list of comparable tests. You can also talk to a Rupa rep to help you transition to alternatives! Learn more.
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Free Thyroxine (fT4)
 test.
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About the Test

About the Test

This is a single-marker test measuring free T4. It is used to evaluate thyroid function.

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Biomarkers

Free Thyroxine
Free Thyroxine
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Lab Test Information
Price
$
65
.00
 $
36.00
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Lab Company
ZRT Laboratory
Sample Type
Blood Spot
Shipping Time
2 - 3 days
UPS, USPS
Turnaround Time
7 days
Test Preparation Starts
Up to 3 days before collection
Number of Collection Days
1 day
Methods Used For Processing
EIA
Lab Certifications
CLIA Certified
CAP Accredited
ISO 15189
COLA Accredited
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