Accurate quantitative detection of Free Thyroxine (fT4) with fluorecare® FIA test kit. Fast 15-min POCT solution for thyroid function assessment.
The fluorecare® fT4 test kit offers a highly sensitive and specific method for evaluating thyroid health. Since fT4 is the metabolically active form of thyroxine, its measurement is crucial for diagnosing hyperthyroidism and hypothyroidism. This integrated POCT solution allows healthcare providers to obtain laboratory-quality results quickly, facilitating immediate clinical decisions.
The fluorecare® Free Thyroxine (fT4) Diagnostic Kit is a quantitative immunofluorescence assay developed by Microprofit Biotech for measuring fT4 levels in human serum or plasma. It is an essential component of the thyroid function panel on the fluorecare® POCT platform.
The kit uses a competitive immunodetection method. Free T4 in the sample competes with coated antigens for fluorescent-labeled antibodies. The resulting signal intensity is negatively correlated with the fT4 concentration, which is then calculated and displayed by the fluorecare® analyzer.
Primary screening and diagnosis of thyroid dysfunction.
Monitoring treatment for patients with thyroid disorders.
Evaluation of the pituitary-thyroid axis in combination with TSH tests.
Assessment of thyroid status during pregnancy.
What is the reference range for fT4? The typical reference range is 12-22 pmol/L (0.93-1.7 ng/dL).
Does the test require special storage? No, it is stable at room temperature (2-30°C).
How much sample is needed? The test requires 70μL of serum or plasma.
Optimized for the fluorecare® MF-T1000 analyzer and MF-C100 incubator.
Competitive FIA technology for high sensitivity.
Quantitative results in 15 minutes.
CE certified for international diagnostic use.
User-friendly with internal calibration via ID chip.
Excellent correlation with major laboratory immunoassay systems.

REF | MF-24 | |
Product Name | Free Thyroxine(FT4)Diagnostic Kit | |
Method | Immunochromatographic assay | |
Qualification | CE | |
Testing content | Free Thyroxine(FT4) | |
Sample Type | Serum、plasma | |
Sample Volume(uL) | 70μL | |
Working Range | 2-70 pmol/L | |
Reaction Time (min) | 15 | |
Storage Temperature | 2-30℃ | |
Shelf Life | 18 months | |
Applied Instrument | fluorecare® MF-T1000 Dry-type Immunofluorescence Quantitative Analyzer | |
Specification | 20 tests/kit | 25 tests/kit |
Size(L*W*H)mm/Kit | 145*115*75 | 205*138*83 |
Weight(kg)/Kit | 0.280 | 0.337 |
Kit components | Test Card( including the desiccant):20 Cassettes Diluent:20 tubes ID Chip:1 Piece Instruction:1 Copy | Test Card ( including the desiccant):25 Cassettes Diluent:25 tubes ID Chip:1 Piece Instruction:1 Copy |