Test directory: TSH / Free T4

Ordering Code449
Test NameTSH / Free T4
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerPlasma in Lithium Heparin (Green),
Serum in Plain (Red)
Optimum Volume0.5 mL
Transport RequirementsOahu: Ambient
Airline: Refrigerated
Specimen StabilityAmbient: 24 Hours
Refrigerated: 7 Days
Frozen: 30 Days
Frozen samples should be thawed only once.
Rejection CriteriaSpecimen older than stability limits, Grossly hemolyzed,
Insufficient quantity, Heat treated samples
Avail. StatNO
Analytic Time1 Day
MethodologyElectrochemiluminescence Immunoassay

Reference range(s)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
TSH0-1D9.20-28.409.20-28.40uIU/mL
TSH1D-2D6.60-15.606.60-15.60uIU/mL
TSH2D-3D0.83-8.650.83-8.65uIU/mL
TSH3D-1M0.67-5.570.67-5.57uIU/mL
TSHADULT0.27-4.200.27-4.20uIU/mL
T4, FreeALL0.9-2.10.9-2.1ng/dL