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Free T4


TEST DIRECTORY
Test Name
Free T4
Alternate Names
FT4
SPECIMEN REQUIREMENTS
Supplies for Submission
SST/Gold Top (1)
Storage Requirements
Refrigerated
GENERAL AND TECHNICAL INFORMATION
Limitations
If the sample contains a biotin concentration of > 10 ng/mL, there is the potential of biotin interference effects, and hence, falsely elevated results.
CPT Code
84439