ST AIA-PACK FT4
ST AIA-PACK FT4 is designed for in-vitro diagnostic use for the quantitative measurement of non-protein-bound (free) thyroxine (FT4) in human serum or heparinized plasma on TOSOH AIA systems.
Part #: 0025247
Manufacturers:
Description
Thyroxine (T4) is produced by the thyroid gland and 99.97% of T4 circulates in the blood in a bound form with the plasma proteins including thyroxine-binding globulin (TBG), thyroxine-binding pre-albumin (TBPA) and albumin. Approximately 0.03 % of the total circulating thyroxine is unbound. Historically measurement of total serum T4 (bound + free) is used to assess the clinical status of the Thyroid gland. But free T4 (FT4) is believed to be the physiologically active portion of the thyroxine which stimulates the metabolism and controls, via the pituitary, the feedback system involving the release of TSH. Therefore measurement of free T4 (FT4) typically co-relates more closely to the patient's actual thyroid status.
Technical specifications
| Kit name | ST AIA-PACK FT4 |
| Method | Enzyme Immunoassay (EIA) |
| Assay principle | Competitive enzyme immunoassay |
| Assay sample | Serum or heparinized plasma |
| Calibrators | 0, 0.4, 1, 2, 4, 9 ng/dL |
| Standardization | Internal |
| Calibration stability | 90 days |
| Assay range | 0.1 - 8 ng/dL |
| Reaction time | 10 minutes |
| Storage | 2 - 8oC |
Refer to the product Instruction-For-Use (IFU) for complete details.