Thyroperoxidase Ab (TPO)

Test ID: TPO CPT code: 86376 LOINC: 8099-4 Specimen Type: Serum Frequency: Setup: Mon-Fri; 2 days refridgerated. 3 months -20 C. Instructions: Draw in an SST or plain red. Refrigerate. Freeze if not analyzed in within 2 days. Text: Methodology:...

Thyrotropin Receptor Ab

Test ID: Z0697 CPT code: 83520 LOINC: 5385-0 Specimen Type: SST (preferred) or Red Frequency: 1 – 3 days Instructions: 1 mL Serum from SST (preferred) or Red, Frozen. Min 0.7. Text: Diagnosis of hyperthyroidism and Graves’ disease. Thyrotropin-receptor...

Thyroxine (T4)

Test ID: T4 CPT code: 84436 LOINC: 3026-2 Specimen Type: Red, SST Frequency: Setup: Mon-Fri; TAT 1-3 days Instructions: 0.5mL serum from Red gel tube. Min 0.3mL. Text: Evaluate thyroid function; diagnose T4 toxicosis. Methodology:...

Thyroxine Free, by Dialysis

Test ID: Z0955 CPT code: 84439 LOINC: 6892-4 Specimen Type: Red, SST, OR Lav (EDTA) tube Frequency: 6 – 11 days Instructions: 1.0 mL Serum or Plasma from Red,SST,OR Lav-top(EDTA)tube, Frozen, Separate within 45 minutes. Min 0.5 mL; Pediatric Volume: 0.4 mL....

Thyroxine-Binding Globulin

Test ID: ZG092 Component(s)- Z0308 Thyroxine Binding Globulin LOINC :3021-3 CPT code: 84442 LOINC: Specimen Type: Red or SST Frequency: 1 – 3 days Instructions: 0.8 mL Serum from Red or SST, Refrigerated. Min 0.5 mL. Text: Used to distinguish between high T4...