Veripath Test Directory

Epic Test Name TSH REFLEX
Synonyms Thyroid Stimulating Hormone, Reflex ; VTSHRX - University Hospital.
Specimen Requirements 
Container 3 mL green PST (lithium heparin) collection tube, Acceptable Plain RED, SST, K3-EDTA.
Specimen Type Blood
Preferred Collection Volume 3 mL
Minimum Collection Volume 2 mL; Neonates 0.5 mL
Collection Instructions
Specimen Handling
Rejection Criteria
Methodology ECLIA
Reference Range 0.40-4.50 mIU/mL
CPT Code(s) 84443
Department Chemistry
Contact Information Lab (main): 214-633-5227
Turn Around TimeRoutine less than 4 hrs
Performed Sunday - Saturday
Performed by Chemistry
Notes If TSH is < 0.40 mIU/mL a Free T4 will be performed.
If TSH is > 4.50 mIU/mL, a Free T4 will be performed.
If TSH is < 0.40 mIU/mL AND Free T4 is not greater than 1.80 ng/dL a Total T3 will be performed.
Updated/Reviewed 09/25/2017