Technique: 2 ml. (1 ml. Minimum) Serum from 1 SST (Gel Barrier Tube). Take specimen between
7 - 9 a.m. for morning sample.
Technique: 2-8C
Sample Collection Instruction: Diurnal variation present;
Specify time & date on sample tube
& test requisition form.
Overnight fasting is preferred for morning sample and 4 hrs for evening sample
