T4, Free details

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T4, Free

Labcorp

Broadest draw-site network nationwide.

Sample type: Serum
Avg. sample processing time: 2 Business days
Require fasting: No

BiomarkersLabcorp biomarkers

T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.

$13.49

T4, Free

Quest Diagnostics

Same-day appointments in most metros.

Sample type: Serum
Avg. sample processing time: 5 Business days
Require fasting: No

BiomarkersQuest Diagnostics biomarkers

T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.

$7.49

Description

T4, Free measures the unbound, biologically active form of thyroxine in the blood. It is a key indicator of thyroid function and is commonly used to evaluate thyroid disorders, especially when TSH levels are abnormal.

Included biomarkers

Biomarkers

T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.

Preparation

Labcorp

If you are taking or have recently taken heparin, please consult your healthcare provider before collecting your sample. This medication may affect your results.

Quest Diagnostics

Quest Diagnostics lists no special preparation for this test.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

ConsultationsConsultation

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