Description
fT3 Fast Test Kit (Immunofluorescence Assay)
The fT3 Fast Test Kit is a quantitative immunofluorescence assay designed to measure free triiodothyronine (fT3) in human serum, plasma, and whole blood. It provides rapid and accurate assessment of thyroid function and supports differential diagnosis of thyroid disorders such as T3 thyrotoxicosis.
Key Advantages
- Rapid Results: Delivers results within 15 minutes
- Measures Active Hormone: Detects only the biologically active, free T3 form
- Independent of Binding Protein Variability: Not affected by serum protein concentration
- Broad Sample Compatibility: Works with serum, plasma, or whole blood
- Stable Storage: 4–30°C with a 24-month shelf life
About fT3
Free triiodothyronine (fT3) is the unbound and metabolically active form of the thyroid hormone T3, responsible for regulating metabolic rate and energy balance. Measuring fT3 allows for accurate evaluation of thyroid function, especially in cases where protein-binding abnormalities may affect total T3 measurements. It is essential for diagnosing T3 thyrotoxicosis and other thyroid disorders.
Specifications
| Parameter | Details |
|---|---|
| Test Item | fT3 (Free Triiodothyronine) |
| Sample Type | Serum, Plasma, Whole Blood |
| Detection Method | Immunofluorescence Assay |
| Detection Range | 0.40–50.00 pmol/L |
| Cut-off Value | 3.10–6.80 pmol/L |
| Test Time | 15 Minutes |
| Storage Conditions | 4–30°C |
| Shelf Life | 24 Months |
Compatible Devices
- Getein 1100 Immunofluorescence Quantitative Analyzer
- Getein 1180 Immunofluorescence Quantitative Analyzer
- Getein 1600 Immunofluorescence Quantitative Analyzer
Clinical Applications
- Assessment of thyroid function and hormone balance
- Differential diagnosis of hyperthyroidism and T3 thyrotoxicosis





