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HelpOrder Code TSH w Rfl Ft4 Thyroid Stimulating Hormone W Reflex Free T4
Additional Codes
Epic Order ID LAB5089
Sub activity Type
Chemistry
Collection tube (preferred)
Green Li PST
Specimen Type
Plasma/Serum
Minimum Volume
0.6 ml
Stability (days)
2 days at 2-8°C
24 hours at room temperature (20-22°C)
7 days at 2-8oC (Oelwein)
Transport temperature
Refrigerated
Transport Container
Plasma Separator Tube(PST) or Serum Separator tube (SST)
Rejection Criteria
Anticoagulants other than heparin
Performance
Performed Daily
Report Available
Same day
Acceptable collection tube
SST
Notes
FT4 is reflexed if TSH is <0.270 or >4.200
Reference Range
TSH
Cedar Falls / Oelwein: 0.358 - 3.740 mIU/mL
Waterloo: 0.27 - 4.20 mIU/mL
Free T4
Cedar Falls / Oelwein: 0.76 - 1.46 ng/dL
Waterloo: 0.93 - 1.7 ng/dL