Test Name
T3, Free
LIS CodeFREET3
Lab Section
Chemistry
Fluid TypePlasma
Specimen Tube Type Transport
Gel Green Top
Container Whole Blood Required3 ml whole blood in a Gel Green Top tube or 1.5 ml whole blood in (2) Gel Green Microtainers
Summary Test NameT3, Free
Specimen Stability6 days, if refrigerated
Minimum Volume0.3 ml plasma
Specimen TransportRefrigerate
Specimen Preparation In HouseSpin, separate, refrigerate until analysis
Reference ValueMale/females and all ages the same 1.71 - 3.71 pg/mL