FDA Clearance for first state-of-the-art automated chemiluminescence-based immunoassay (ChLIA) test for free testosterone

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* The state-of-the-art assay is processed on the Company’s random-access iSYSTM or i10 TM instruments to deliver quick turnaround times and high-throughput testing with minimal technician training and expertise, while maintaining superior accuracy and reliability.




WALTHAM, Mass.--(BUSINESS WIRE)--Revvity, Inc. (NYSE: RVTY), today announced that it received 510(k) clearance from the U.S. Food and Drug Administration (FDA) for EUROIMMUN’s automated chemiluminescence-based immunoassay (ChLIA) test for free testosterone. This innovative test is the first of its kind to receive FDA clearance for direct quantitative measurement of free testosterone levels, marking a significant advancement in diagnostic capabilities for androgen disorders.




Key features of the new test include:

• The only FDA-cleared ChLIA assay for direct quantitative measurement of free testosterone in human serum or plasma.

• Rapid results on EUROIMMUN’s ChLIA platforms with the first result available in just 48 minutes and an estimated throughput of nearly 60 tests per hour.

Incorporation of monoclonal antibodies to ensure specificity and consistent performance across test batches.




The state-of-the-art assay is processed on the Company’s random-access iSYSTM or i10 TM instruments to deliver quick turnaround times and high-throughput testing with minimal technician training and expertise, while maintaining superior accuracy and reliability. The assay provides direct measurement of free testosterone levels in a single test, enhancing diagnostic capabilities for conditions such as hypogonadism, impotence, polycystic ovarian syndrome (PCOS), and other androgenital syndromes.

"Laboratory customers have been asking for a user-friendly FDA-cleared test, on a random-access platform, for direct measurement of free testosterone," said Jonathan Friend, general manager at Revvity’s EUROIMMUN US. "This clearance reinforces our commitment to expanding the FDA-cleared menu for the EUROIMMUN family of ChLIA automation solutions with assays that serve diverse patient populations across all demographics.”
 
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* The test is processed using the company’s iSYS or i10 instruments and incorporates highly specific monoclonal antibodies to ensure accurate and reproducible results. EUROIMMUN's ChLIA tests "use magnetic particles coated with antibodies or antigens as a solid phase to detect specific antigens or antibodies in patient samples by means of chemiluminescence signals," the company explained.4

* According to Revvity, the test can provide results in 48 minutes to provide diagnostic insights for conditions such as hypogonadism, impotence, polycystic ovarian syndrome, and other androgenital syndromes. The FDA clearance is for an assay range of 0.40 pg/mL to 60.00 pg/mL.3



Key Takeaways

The FDA cleared EUROIMMUN's ChLIA test for free testosterone, offering results in 48 minutes for various androgen-related conditions.

The test operates with an assay range of 0.40 pg/mL to 60.00 pg/mL using iSYS or i10 instruments, ensuring accuracy with monoclonal antibodies.

The ChLIA test has European CE mark approval, expanding EUROIMMUN's reproductive testing options.

EUROIMMUN's total testosterone test is CE-marked in Europe but lacks FDA clearance in the US.




The FDA has granted 510(k) clearance to EUROIMMUN’s automated chemiluminescence-based immunoassay (ChLIA) test for the quantitative measurement of free testosterone levels in serum or plasma, Revvity, Inc, announced in a news release.1

It the first test of its kind to receive FDA approval for the measurement of free testosterone, the company noted. The ChLIA test also has European CE mark approval.2

According to Revvity, the test can provide results in 48 minutes to provide diagnostic insights for conditions such as hypogonadism, impotence, polycystic ovarian syndrome, and other androgenital syndromes. The FDA clearance is for an assay range of 0.40 pg/mL to 60.00 pg/mL.3

The test is processed using the company’s iSYS or i10 instruments and incorporates highly specific monoclonal antibodies to ensure accurate and reproducible results. EUROIMMUN's ChLIA tests "use magnetic particles coated with antibodies or antigens as a solid phase to detect specific antigens or antibodies in patient samples by means of chemiluminescence signals," the company explained.4

"Laboratory customers have been asking for a user-friendly FDA-cleared test, on a random-access platform, for direct measurement of free testosterone," said Jonathan Friend, general manager at Revvity’s EUROIMMUN US, in the news release.1 "This clearance reinforces our commitment to expanding the FDA-cleared menu for the EUROIMMUN family of ChLIA automation solutions with assays that serve diverse patient populations across all demographics.”

This test adds to EUROIMMUN’s suite of reproductive testing options, which includes an automated assay for the quantitative measurement of total testosterone.5

The total testosterone test has been granted CE mark approval in Europe and can be used in the diagnosis and treatment of conditions such as primary and secondary hypogonadism, delayed or precocious puberty, impotence in males, hirsutism and virilization in females due to tumors, polycystic ovaries, and adrenogenital syndromes.The test has not been granted FDA clearance in the US.
 

Advantages of EUROIMMUN ChLIA​


Capability to have fully automated processing from primary sample to result using the IDS-iSYS Multi-Discipline Automated System or the IDS-i10

Highest speed – results in just 30 minutes

Ready-for-use reagent cartridges and calibrators with long stability and cooling within the instrument

Automated transmission of quality control data by RFID chip for error-free and quick loading with little manual effort

Quantification based on calibration curves which are stable over several weeks

Broad dynamic analytical range due to high signal intensity




Test Principle

Chemiluminescence immunoassays (ChLIA) from EUROIMMUN use magnetic particles coated with antibodies or antigens as a solid phase to detect specific antigens or antibodies in patient samples by means of chemiluminescence signals.




Antibody detection by ChLIA

The antigen-coated magnetic particles are incubated with diluted samples. If a sample contains specific antibodies directed against the antigen, these bind to the antigen-coated magnetic particles. In the next step, acridinium-labelled antibody (conjugate) is added. This binds to the specific antibodies. A trigger solution is then added to induce a chemiluminescence reaction. The resulting light signal is proportional to the antibody concentration in the sample within the measurement range and is automatically converted into a concentration by the instrument.




Antigen detection by ChLIA


The antibody-coated magnetic particles are incubated with the sample and an antigen-specific biotinylated antibody. During the incubation, the antigen is bound by the magnetic particle-coupled antibody as well as by the biotinylated antibody. In the next step, acridinium-labelled ExtrAvidin (conjugate) is added. This binds to the biotinylated antibody. A trigger solution is then added to induce a chemiluminescence reaction. The resulting light signal is proportional to the antigen concentration in the sample within the indicated measurement range and is converted automatically into a concentration by the instrument.





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