Chromatography/Mass Spectrometry
Nicotinic Acid; Nicotinamide; Niacin
Serum or Plasma
Quest Diagnostic Valencia
Other Reference Test
Tuesday, Thursday, Saturday
2-4 Days
2-4 mL Blood
Red Top (No Additive)
Plasma collected in an EDTA (lavender-top) tube is also acceptable.
Frozen-Only
Room Temp=Unacceptable; Refrigerated=Unacceptable; Frozen=30 Days
Serum separator tube (SST)
2 mL Serum or Plasma
1 mL Serum or Plasma
Nicotinamide and Nicotinic Acid.
84591
02-23-20
SL