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HelpThyroid Stimulating Hormone (TSH)
Additional Codes
LAB129
Performing Laboratory
MBMC Main Laboratory
Methodology
Electro-Chemiluminescent Immunoassay (ECLIA)
Specimen Requirements
Specimen Type: Plasma
Container/Tube: Mint-green top (lithium
heparin)
Specimen Volume: Full tube
Alternative Specimen Type: Serum
Alternative Container/Tube: Gold, Serum gel
Alternative Specimen Volume: Full tube
Specimen Transport Temperature
Ambient
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: within 4 hours
Reference Values
0-4 days: 1.00 - 25.00 uIU/mL
4-30 days: 0.50 - 10.00 uIU/mL
>30 days: 0.30 - 4.20 uIU/mL
TSH concentration may range up to 100 mcIUnits/mL due to surge of TSH production on the first day of life and then fall gradually to adult levels by one month of age.
Test Classification and CPT Coding
Test Classification:This test has been cleared
or approved by the U.S. Food and Drug Administration and is used
per manufacturer’s instructions.
CPT Code:
84443
Stability
5 days Refrigerated