free thyroid index

The free bioactive part of thyroxine can directly reflect the thyroid function, and is not affected by the change of TBG, but the content is very small, the determination is difficult, and the required reagent price is also expensive. Clinically, the free thyroxine index (FT4I, FT3I) can be used to reflect serum free thyroxine levels indirectly. Basic Information Specialist classification: growth and development check classification: endocrine examination Applicable gender: whether men and women apply fasting: fasting Reminder: 125I-T3 (MAA) reagent is stored at 4 °C to prevent freezing. Normal value FT4I: 5.45~12.8 (8.09±1.6) Clinical significance FT4I and FT3I can better reflect thyroid function, and the hyperthyroidism is increased, and the hypothyroidism is reduced. FT3I is reduced in cirrhosis, nephropathy, and the like, and low T3 syndrome. Low results may be diseases: hypothyroidism, high thyroid hypothyroidism results may be disease: hyperthyroidism (1) 125I-T3 (MAA) reagent was stored at 4 ° C to prevent freezing. (2) Mix well before loading. The sample should be loaded under electromagnetic stirring. (3) The centrifugation temperature should not be too high, and the number of revolutions is >4000r/min. (4) Immediately after centrifugation, the supernatant should be aspirated. Inspection process Method of operation The operation process is shown in Table 1. Not suitable for the crowd Special diseases: Patients with hematopoietic dysfunction, such as leukemia, various anemia, myelodysplastic syndrome, etc., unless the examination is essential, try to draw less blood. Adverse reactions and risks 1, subcutaneous hemorrhage: due to pressing time less than 5 minutes or blood draw technology is not enough, etc. can cause subcutaneous bleeding. 2, discomfort: the puncture site may appear pain, swelling, tenderness, subcutaneous ecchymosis visible to the naked eye.

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