Thyroid-stimulating hormone (TSH) with automatic reflex (as diagnostically warranted) to free thyroxine, free triiodothyronine, and/or thyroid peroxidase (TPO) antibodies. If reflex testing is performed, additional charges/CPT code(s) may apply.
Special reflexing: If TSH is <0.450, it will reflex to thyroxine (T4), free, direct and depending on the thyroxine (T4), free, direct result, may reflex to a triiodothyronine (T3), free, both at an additional charge. If the TSH is >4.500, it will reflex to thyroxine (T4), free, direct and depending on the thyroxine (T4), free, direct result, may reflex to a thyroid peroxidase (TPO) antibody, both at an additional charge.
(Specimen Container)
SST (Tiger Top)/ Lithium Heparin/ Sodium Heparin
(Transport Temperature)
| Temperature | Period |
|---|---|
| Room temperature | Unacceptable |
| Refrigerated | 7 days |
| Frozen | If testing will be delayed more than 6 days, specimens should be frozen at -10°C or colder |
The Thyroid Cascade Panel is a panel that will act as an aid to physicians in the diagnosis of common adult thyroid disorders. The initial results of a TSH will determine further reflex orders of T4, Free, TPO Antibodies and T3, Free orders and provided an interpretation based upon the results of the reflexed tests.
See Individual Tests
