hrp0092p1-158 | Adrenals and HPA Axis (1) | ESPE2019
Greaves Ronda
, Hartmann Michaela F.
, Zakaria Rosita
, Ho Chug Shun
, de Rijke Yolanda B.
, van den Berg Sjoerd
, Cooke Brian
, Hoad Kirsten
, Graham Peter
, Davies Stephen
, Mackay Lindsay
, Loh Tze Ping
, Wudy Stefan A.
Objective: This project aims to evaluate the effect of two isotopically labelled internal standards on the quantification of 17OHP by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) as an orthogonal technique.Methods: Three LC-MS/MS and one GC-MS/MS laboratories, spanning four countries worldwide, who routinely measure serum17OHP, compared two internal ...