THYROID STIMULATING HORMONE(TSH)

Message
CHEMISTRY


Test Code
TSH


Alias/See Also
THYROID STIMULATING HORMONE


Preferred Specimen
SERUM


Minimum Volume
4mL


Instructions
DRAW 1 GOLD TOP SST TUBE, WAIT 30 MINUTES TO CLOT AND SPIN DOWN. CAN ALSO BE DONE OFF OF A LI HEP TUBE(LIGHT GREEN).


Transport Container
ORIGINAL TUBE(S)


Transport Temperature
REFRIGERATED


Specimen Stability
Room temperature: 24 hours
Refrigerated (2-8°C): 7 days. Separate if not tested within this time.
Frozen (-10°C or colder): 6 months


Methodology
Chemiluminescent microparticle immunoassay

Setup Schedule
DAILY


Report Available
DAILY


Reference Range
0.35 – 5.0 uIU/mL, If TSH is less than 0.35 OR greater than 5.00 the Lab will add a reflex Free T4.


Clinical Significance
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
WHITE RIVER JUNCTION VT VA- CHEMISTRY 802-295-9363 EXT: 5518, 5519



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.