THYROID STIMULATING HORMONE 3rd GENERATION

Test Code

TSH (OE & LAB)

Alias/See Also

TSH
Thyrotropin

CPT Codes
84443

Preferred Specimen

Gold Tube (SST)

Minimum Volume

1 mL

Other Acceptable Specimens

Green Tube (Lithium Heparin)

Instructions

Centrifuge for complete separation of serum or plasma from red cells WITHIN 2 HOURS.

Transport Container

GOLD Tube

Transport Temperature

Room Temperature

Specimen Stability

15-30°C up to 8 hours
2-8°C up to 7 days

Methodology
ECLIA (EIA by Chemiluminescence)

Setup Schedule

DAILY, as received

Report Available

STAT: <60 minutes
Routine: <4 hours

Reference Range

Male/Female All Ages: Normal Range: 0.34-5.60 uIU/ML
Reference ranges may vary based on performing lab. Use lab reports when interpreting patient results.

Clinical Significance

Used for differential diagnosis of primary, secondary, and tertiary hypothyroidism. Also useful in screening for hyperthyroidism. This assay allows adjustment of exogenous thyroxine dosage in hypothyroid patients and in patients on suppressive thyroxine therapy for thyroid neoplasia.

Performing Laboratory
Mount Sinai Hospital
Holy Cross Hospital

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.