In secondary hyperparathyroidism (SHPT) the role of intraoperative PTH is debated.
The criteria of PTH decline predictive of surgical outcome are not standardized.
The accuracy of a 2nd generation PTH assay by central laboratory was assessed.
This method is accurate to predict the persistence of SHPT.
The absolute and % of PTH decline at 30′ were the best predictors of recurrent SHPT.