PREGNENOLONE BY LC-MS/MS, SERUM OR PLASMA
Specimen Collection Requirements
Serum, one 4 mL gold (SST) top tube. Also acceptable: Plasma, lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin) top tube.
CRITICAL FROZEN. Additional specimens must be submitted when multiple tests are ordered. Serum or plasma should be separated from cells and frozen immediately after collection.
0.5 mL serum or plasma in each of two aliquots
Ambient or refrigerated specimens
AFTER SEPARATION FROM CELLS: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 6 months
Thursday, January 5, 2017 03:42:25 AM