Test Code 151918758 TSH (Thyroid Stimulating Hormone)
Specimen Requirements
Submit only 1 of the following specimens:
Hospital Preferred Specimen Type: Plasma
Container/Tube: Lithium heparin gel
Outreach Preferred Specimen Type: Serum
Container/Tube: Serum gel
Spin Instructions:
Serum gel: Allow to sit for 30 minutes prior to spinning. Spin within 2 hours of collection.
Heparin plasma: Spin within 45 minutes of collection.
Also acceptable: Red top tube
Specimen Transport Temperature
Refrigerated
Storage Temp Stability
Refrigerated: 7 days
Methodology
LOCI—Luminescent Oxygen Channeling Immunoassay
Methodology changed from 3rd Generation assay using direct chemiluminescent technology on 11/17/15.
Reference Range
New reference range effective 6/22/2021
0.350 – 4.940 uIU/mL
Day(s) Test Set Up/TAT
Performed:
Daily
Available STAT
STAT: < 1 hr
Routine: < 4 hrs
Aliases
TSH
CPT Code
84443