Sample Requirements

Hemostasis Reference Laboratory

Test	3.2% Sodium Citrated Sample (blue top)	Whole Blood EDTA (purple top)	Sample Age	Comments
All Coagulation Testing other than Platelet Aggregation or DNA test.	1-2 Tubes 5 ml ea. as whole blood OR 1 ml plasma into 4 plastic tubes. See Comments		Less or equal to 3 hours, sent at room temp (18-25°C) OR Frozen Plasma, Sent on Dry Ice	Centrifuge tubes (2X) at 1500g for 15 minutes and aliquot plasma.
Platelet Aggregation	n/a	n/a	See comments	Drawn at the Blood Center. Call Hemostasis Laboratory at 206-689-6594 to Schedule an Appointment.
PFAs	1-2 Tubes 5 ml ea. as whole blood	5 ml	Less or equal to 2 Hours SENT AT ROOM TEMP (18-25°C) Special shipping procedure required call 206-689-6594 for instructions.	Must be received within 2 hours of draw OR Drawn at the Blood Center. Call Hemostasis Laboratory at 206-689-6594 to Schedule an Appointment.
DNA Testing
DNA/Factor V Leiden Mutation; DNA/Factor II Mutation Testing	n/a	5 ml	48 Hours (4°C)
Hemophilia A or B Mutation; DNA VWD Mutation	n/a	10 ml	48 Hours (4°C)
Fetal Cell Genotyping	n/a	n/a	n/a	2 confluent T-25 flasks, cultured amniocytes

Minimum requirements are two (2) plasma tubes with at least 0.5 ml of plasma in each tube for each two (2) tests ordered.
Insufficient sample aliquots will negatively affect turnaround time.
Therapeutic anticoagulation interferes with most kinetic (but not DNA) tests.
Several tests are run infrequently, depending upon clinical needs and requests.
Analytic time may be prolonged when several or more complex tests are requested.

All samples must be sent in a sealed, leak-proof container marked with a biohazard sticker to comply with OSHA safety standards to:

Bloodworks Northwest
Attn Hemostasis Laboratory
921 Terry Ave
Seattle WA 98104
206-689-6594

Bloodworks Northwest Laboratories