DRAW BLOOD IN A SST TUBE. CENTRIFUGE, SEPARATE SERUM FROM GEL ASAP AND SEND 1.0 mL SERUM FROZEN IN A SCREW-CAPPED PLASTIC VIAL. INDICATE ON TRASNPORT TUBE “SERUM SST”.

FOR MONITORING THERAPY, BASELINE SAMPLES SHOULD BE COLLECTED JUST PRIOR TO OR ON THE DAY OF THERAPY INITIATION. SUBSEQUENT SPECIMENS FOR COMPARISON SHOULD BE COLLECTED AT APPROXIMATELY THE SAME TIME OF DAY AS THE BASELINE SPECIMEN.