Free T4 (Thyroxine) Normal Reference Range 3.25 – 6.21 pmol/L Test Information A balanced blend of free and protein-bound T3 circulates in the blood. T3 is associated with albumin, thyroxine-binding globulin (TBG), and albumin. Only 0.2-0.4% of the total T3 is present in the solution as unbound or free T3 (FT3) due to the binding …
Thyroid Stimulating Hormone (TSH) Code TSH Sample Reqs B Turnaround 4 hrs Special instructions No special instructions Sample type guide B Gold Vacutainer, SST/Gel anticoagulant, 5ml See the Sample Requirements page for an explanation of all the sample requirements. See the Special Instructions Legend page for a full list of special instructions. Last-updated: 22/12/22 Back to test list