Assesses hemorrhagic or thrombotic risk by measuring rate of clot formation, strength and stability of clot; the effect of platelets, coagulation factors and cellular interactions; maximum platelet function.

Lt blue Sodium citrate (NaCit) - 2.7mL x 2

Prior to specimen collection the following needs to occur by lab:

1. Contact U of M special coag department (612-273-4797) to validate that they can accept the sample for testing.
2. Coordinate collection time with phlebotomy and nursing station.
3. Contact the courier to be on-site at the time of specimen collection. (specimen won’t be collected until the courier is on site)

• Specimen must be collected between 7:00am – 11:00am Mo - Fr
• Immediatley following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting

Specimen testing must be performed within 2 hours of collection

Lt blue Sodium citrate (NaCit)

Ambient - 2 hours

Specimens cannot be sent via pneumatic tube system (PTS)

Viscoelastic clot assessment

See report