July 8 2019
Please note the change in methodology for TSH Receptor Antibody (TRAB), effective July 4th, 2019. The referral Laboratory has discontinued the previous RIA method and replaced it with a third generation competitive fluorescent immunoassay. The new assay provides increased sensitivity. This has resulted in an updated reference range: <1.8 IU/L (Previous RI: <10 U/L).