This transfer occurs between 2 fluorescent tracers: the donor (europium cryptate) and the acceptor (XL665).

In the ProCT assay, a sheep polyclonal antibody against calcitonin is labeled with europium cryptate and a mouse monoclonal antibody against catacalcin is labeled with XL665.

ProCT is sandwiched between the 2 antibodies, bringing them into close proximity.

When the antigen-antibody complex is excited with a nitrogen laser at 337 nm, some fluorescent energy is emitted at 620 nm and the rest is transferred to XL665.

A ratio of the energy emitted at 665 nm to that emitted at 620 nm (internal reference) is calculated for each sample.

Signal intensity is proportional to the number of antigen-antibody complexes formed, and therefore to antigen concentration.(Package insert: BRAHMS PCT Sensitive Kryptor.

This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed.

Some tests are listed as continuously performed, which means assays are performed several times during the day.

The shortest interval of time expressed is same day1 day, which means the results may be available the same day that the sample is received in the testing laboratory.

One day means results are available 1 day after the sample is received in the laboratory.

Pct Performance Chip