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Thyroid Panel (Free T3, Free T4, TSH) details

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Thyroid Panel (Free T3, Free T4, TSH)

Labcorp

Broadest draw-site network nationwide.

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

BiomarkersLabcorp biomarkers

  • Thyroid-Stimulating Hormone (TSH) A pituitary hormone that signals your thyroid to produce hormone. The primary screening test for both underactive and overactive thyroid conditions.
  • T3, Free (fT3) The unbound, biologically active portion of triiodothyronine (T3), the more potent thyroid hormone. Used to evaluate thyroid function.
  • T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.
$62.99

Thyroid Panel (Free T3, Free T4, TSH)

Quest Diagnostics

Same-day appointments in most metros.

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

BiomarkersQuest Diagnostics biomarkers

  • Thyroid-Stimulating Hormone (TSH) A pituitary hormone that signals your thyroid to produce hormone. The primary screening test for both underactive and overactive thyroid conditions.
  • T3, Free (fT3) The unbound, biologically active portion of triiodothyronine (T3), the more potent thyroid hormone. Used to evaluate thyroid function.
  • T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.
$24.49

Description

The Thyroid Panel (Free T3, Free T4, TSH) assesses key hormones involved in thyroid function. It helps evaluate overall thyroid health and is commonly used to diagnose conditions like hypothyroidism, hyperthyroidism, and monitor thyroid therapy.

Included biomarkers

Biomarkers

  • Thyroid-Stimulating Hormone (TSH) A pituitary hormone that signals your thyroid to produce hormone. The primary screening test for both underactive and overactive thyroid conditions.
  • T3, Free (fT3) The unbound, biologically active portion of triiodothyronine (T3), the more potent thyroid hormone. Used to evaluate thyroid function.
  • T4, Free (fT4) The unbound, biologically active portion of thyroxine (T4), your main thyroid hormone. A core marker for evaluating thyroid function.

Preparation

Labcorp

Labcorp lists no special preparation for this test.

Quest Diagnostics
  • Specimen collection after fluorescein dye angiography should be delayed for at least 3 days. For patients on hemodialysis, specimen collection should be delayed for 2 weeks.
  1. 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.
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