високою анти-цитрулінованого результат тесту білок антитіла значення від`ємного референт. What does high Anti-citrullinated protein antibodies test result negative referent values level mean?

Upper limit of normal Anti-citrullinated protein antibodies test result negative referent values is <20 (EU).

Anti-citrullinated protein antibodies (ACPA) are highly specific for RA and are associated with a more severe disease progression.

ACPA have also been shown to have a pathological role in RA.