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HelpTest Code TSHR Thyroid-Stimulating Hormone (TSH) w/Reflex to Free T4, Plasma or Serum
Performing Laboratory
Lima Memorial Health System Laboratory
Specimen Requirements
Preferred:
Container/Tube: Green cap-yellow ring Top (Lithium Heparin Gel) tube
Minimum Volume: 1.0 mL
Collection Instructions: Centrifuge within 2 hours.
Also Acceptable:
Container/Tube: Plain, Red Top or Serum gel (SST-Gel) tube
Reference Values
| Age | Female | Male |
|---|---|---|
| 0-1 Month | 0.720-13.100 mcIU/ml | 0.520-16.000 mcIU/ml |
| 1 Month 1Day-5 Years | 0.460-7.100 mcIU/ml | 0.550-7.100 mcIU/ml |
| 6 Years - 18 Years | 0.360-5.800 mcIU/ml | 0.370-6.000 mcIU/ml |
| 19 Years+ | 0.490-4.670 mcIU/ml | .490-4.670 mcIU/ml |
Specimen Stability
Ambient: 8 hours
Refrigerate: 48 hours
Frozen: aliquot for longer storage
Day(s) Test Set Up
Monday through Sunday
Methodology
Chemiluminescent Immunoassay
Test Classification and CPT Coding
84443 - TSH
84439 - FREE T4