Enzyme Digestion and mechanical measurement of aPTT
(one) 1.8 mL or (one) 2.7 mL Blood
Light Blue (Sodium Citrate)
Fill tube completed.
Room Temp=4 Hours; Refrigerated=Unacceptable; Frozen=2 Weeks (Plasma only)
Clotted; Hemolysis; Under filled tube; >4 Hours Old; Refrigreated; Chilled
1.3 mL Plasma
0.9 mL Plasma
Check tube for clots and centrifuge specimen in Coag area.