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Thyroxine Free (FT4)

Test Details
Test Details
Sample Requirements
Sample Requirements
Order Code
14361
CPT
84439
Test Details
Synonyms

FT4

TAT

24 hours

Methodology

ECLIA

Performing Location

Accredited NRL Laboratory

Testing Frequency

Daily

Test Overview

Measures free T4. More aurate for thyroid status than total T4.

Specimen Type

Serum or Plasma

Volume

0.5 mL

Specimen Container

Gel-barrier tube or Red-top tube or Green-top (Heparin) tube

Patient Preparation

No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.

Collection

This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.

Specimen Stability
Temperature Period
Refrigerated 7 days
Order Code
14361
CPT
84439
Test Details
Synonyms

FT4

TAT

24 hours

Methodology

ECLIA

Performing Location

Accredited NRL Laboratory

Testing Frequency

Daily

Test Overview

Measures free T4. More aurate for thyroid status than total T4.

Specimen Type

Serum or Plasma

Volume

0.5 mL

Specimen Container

Gel-barrier tube or Red-top tube or Green-top (Heparin) tube

Patient Preparation

No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.

Collection

This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.

Specimen Stability
Temperature Period
Refrigerated 7 days