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
Not provided.
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)
Similar Tests
Other tests from different labs that may be relevant
Thyroid Stimulating Hormone with Reflex to Free Thyroxine
ARUP Laboratories
Thyroid-stimulating Hormone (TSH) and Free T4
Labcorp
Thyroxine (T4) and Thyroid-stimulating Hormone (TSH)
Labcorp
Thyroid Profile With TSH
Labcorp
T4 (Thyroxine), Total and Free, Serum
Mayo Clinic Lab
Thyroxine, Free (Free T4)
ARUP Laboratories
Thyroid Function Cascade, Serum
Mayo Clinic Lab
Thyroid-stimulating Hormone (TSH)
Labcorp
Thyroxine (T4), Free, Direct
Labcorp
T4 (Thyroxine), Free, Serum
Mayo Clinic Lab