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FT4

The Biorex Diagnostics Free Thyroxine (FT4) kit is intended for the quantitative determination of FT4 concentration in human serum by a Microplate Chemiluminescence immunoassay.

Thyroxine, the principal thyroid hormone, circulates in blood almost completely bound to carrier proteins. The main carrier is thyroxine-binding globulin (TBG). However, only the free (unbound) portion of thyroxine is responsible for the biological action. Further, the concentrations of the carrier proteins are altered in many clinical conditions, such as pregnancy.

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Description

Product Name CAT.No Size
FT4 BXL0722A 96T
FT4 BXL0722A 192T

 

 

 

Product Description

The Biorex Diagnostics Free Thyroxine (FT4) CLIA Kit is a quantitative chemiluminescent immunoassay (CLIA) designed for precise measurement of free thyroxine levels in human serum or plasma. FT4 represents the biologically active fraction of thyroxine circulating in the bloodstream, providing a reliable indicator of thyroid hormone activity and metabolic status. Accurate determination of this hormone is essential for diagnosing thyroid disorders, monitoring therapy, and evaluating overall endocrine function.

This assay combines high sensitivity, specificity, and reproducibility, ensuring consistent detection of physiologically and clinically relevant FT4 levels. Its microplate format allows multiple samples to be tested simultaneously, improving laboratory efficiency and workflow. The kit is supplied with ready-to-use reagents, calibrators, and controls, minimizing preparation errors and ensuring reliable results across different operators and laboratory settings.

Key Features

  • Quantitative CLIA Microplate Assay – precise measurement of free thyroxine concentrations.
  • High Sensitivity and Specificity – detects physiologically relevant hormone levels for thyroid evaluation.
  • Reliable Reproducibility – ensures consistent results across multiple runs and laboratories.
  • Ready-to-Use Kit Components – includes all reagents, standards, and controls for streamlined workflow.
  • Versatile Clinical and Research Applications – suitable for thyroid function assessment, therapy monitoring, and endocrine research.

Routine use of this kit enables healthcare professionals to diagnose conditions such as hypothyroidism, hyperthyroidism, and thyroid hormone resistance, as well as to assess subclinical thyroid dysfunction. It also supports therapy monitoring in patients undergoing thyroid hormone replacement or suppression therapy. In research settings, the assay provides valuable data for studies on metabolic regulation, hormone interactions, and endocrine physiology.

Designed for hospitals, clinical laboratories, and research facilities, the Biorex Diagnostics FT4 CLIA Kit offers a reliable, efficient, and user-friendly solution for measuring free thyroxine. Its robust performance, reproducibility, and ease of use make it a critical tool for accurate thyroid evaluation, treatment monitoring, and endocrine research, ultimately supporting improved patient care and metabolic health outcomes.

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Additional information

Storage

2-8°C