Thyroid Screening Cascade

Message

COLLECT A 5ML SST (TALL GOLD)
Indicate collection date and time on the specimen or requisition.

Test Code

THYRSC

Alias/See Also

Thyroid Stimulating Hormone Progressive
Thyroid Stimulating Hormone Cascade
TSH with reflex

CPT Codes
TSH - 84443. If reflexed Free T4 - 84439, Free T3 - 84481, Thyroid Peroxidase Antibodies - 86376

Includes

If TSH (3rd Generation) is abnormal and Free T4 will be added. If TSH is elevated and FT4 is decreased or normal, Thyroid Peroxidase Antibodies will be added. If TSH is decreased and Free T4 is decreased or normal a Free T3 will be added.

Preferred Specimen

1.0 mL collected in a SST (serum seprator-gold top tube)

Minimum Volume

0.5 mL

Other Acceptable Specimens

Only serum accepted.

Specimen Stability

See individual components

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Samples not labeled with complete first and last name of patient and date of birth.
Plasma sample submitted.
Grossly hemolyzed.

Methodology
See individual components

Setup Schedule

See individual components

Report Available

See individual components

Reference Range

See individual components

Clinical Significance

See individual components

Performing Laboratory
See individual components

Last Updated: November 16, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.