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TSH
Test CodeLAB129
Alias/See Also
Thyroid Stimulating Hormone
CPT Codes
84443
Preferred Specimen
4.5 ml (1.5 ml minimum) lithium heparin (green); alternate-SST (gold) or Red (no additive)
Minimum Volume
1 ml (500 ul minimum) plasma; alternate-serum
Instructions
After centrifugation, if not in gel barrier tube, pour off serum into an aliquot tube
Transport Temperature
Room temp
Specimen Stability
Separated from cells: 8 hours room temp, 48 hours refrigerated
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Icteric: >10 mg/dL bilirubin, Hemolysis: >500 mg/dL hemoglobin, Lipemia: >1800 mg/dL triolein
Methodology
Immunoenzymatic
Setup Schedule
Mon- Sun
Reference Range
0.34–5.60 uIU/mL
Clinical Significance
The principal clinical use for hTSH measurement is for the assessment of thyroid status
Performing Laboratory
Piedmont Athens Regional