Pathology - Test Catalog

Test Catalog

T4, Free

Test Name: T4, Free
Alternate Description:
LIS Code:
Lab Section:


Fluid Type:


Minimum Volume:

1.5 ml whole blood in (2) Gel Green Microtainers

Specimen Tube Type Transport:

Gel Green Top

Container (Whole Blood Required):

3 ml whole blood in Gel Green Top

Specimen Stability:

72 hours if refrigerated

Specimen Transport:



Setup: Monday - Friday

Specimen Preparation (In House):

Spin and refrigerate until analysis

Specimen Preparation (Outreach):

Spin within 4 hours of collection. Refrigerate until courier pickup.

Reference Value:
Male/Female Ranges the Same
20 years 0.70-1.48 ng/dL
5 days 0.80-2.00 ng/dL
0 2.20-5.30 ng/dL