Casandra
Casandra Test Code QD14596Version 1 (DRAFT)
Performing Lab
TSH with Reflex to Free T4
Also known as: Thyroid Stimulating Hormone with Reflex
Clinical Use
Order TestUse
The test measures thyroid‑stimulating hormone (TSH) to evaluate thyroid function and, if the TSH result is outside the reference range, reflexively measures free T4 to aid in diagnosis of hypothyroidism or hyperthyroidism.
Special Instructions
If TSH is abnormal, a free T4 (T4, Free) will be automatically performed at no additional cost to the patient or provider.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Chemiluminescent Immunoassay)
Biomarkers
Free T4
AnalyteFree T4 • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
TSH
AnalyteTSH • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
Not provided
Container
SST (Serum Separator Tube)