Thyroid Cascade THCS
One 5 mL gold (SST) top tube. Also acceptable: heparinized plasma.
1 mL serum at 2-8ºC.
|Stability||Refrigerated: 7 days.|
|CPTCode||84443 (If reflexed, 84439 and 84481)|
|Notes||TSH is performed. If the TSH is abnormal, a Free Thyroxine is performed. If Free Thyroxine is normal, then Free T3 is performed.|
|Preferred Specimen Collection Device(s)|