Long-term stability of thyroid peroxidase antibody (anti-TPO) in serum in the Danish General Suburban Population Study.
Christian Z JensenBirte NygaardJens FaberPalle L PedersenMorten K LarsenJørgen K KantersHenrik E PoulsenMark KelloggChristina EllervikPublished in: Clinical chemistry and laboratory medicine (2023)
Anti-TPO serum samples in the range 30-198 U/mL were stable after 12-years of storage at -80 °C with an estimated nonsignificant average percentage deviation of +2.22%. This comparison is based on Kryptor Classic and Kryptor Compact Plus, which used identical assays, reagents, and calibrator, but for which the agreement in the range 30-198 U/mL is unclarified.