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HelpTest ID BLOD0935 Thyroid Panel (FT4/TSH)
Specimen Type/Requirements
Gold top (Serum w/gel) tube - Serum
Red top (Serum w/out gel) tube - Serum
Light Green top (Lithium Heparin w/gel) tube - Plasma
Note: If testing will be delayed more than 24 hours, remove serum or plasma from the clot, red blood cells, or separator gel.
Test is affected by moderate hemolysis and gross lipemia.
Specimen Volume
| Preferred Volume | 2.0 mL |
|---|---|
| Minimum Volume | 0.5 mL |
Stability/Transport
| Room Temperature | 8 hours | |
|---|---|---|
| Refrigerated | 6 days | Preferred for transport |
| Frozen | Greater than 6 days |
Performed Test Frequency
Monday through Sunday
Additional Information
Test includes: Free T4 and TSH
Methodology
Sioux Falls – Chemiluminescence
Rapid City – Electrochemiluminescence Immunoassay (ECLIA)
Performing Lab
Sanford Laboratories Sioux Falls
Sanford Laboratories Rapid City
CPT
84439, 84443