Ristocetin Response Curve  Email this article           Printer friendly page

Primary Name Ristocetin Response Curve
Synonym Low-dose ristocetin-induced platelet aggregation
Synonym Low-dose ristocetin-induced platelet agglutination
Contraction Low-dose RIPA
Contraction --
Contraction --
UAB Procedure Number 2500352
CPT Code 85307
Specimen Collect nine (9) 2.7 mL or six (6) 4.5 mL blue-stopper tubes (3.2% sodium citrate), filled to specified volume. Do not underfill or overfill. Test must be performed on freshly collected whole blood. Call lab prior to collecting specimen at 205-934-8650.
Specimen Management Do not centrifuge. Maintain tubes at room temperature and deliver to special coagulation laboratory within 1 hour of collection.
Specimen Accepted Monday-Friday
Test Performed Monday-Friday
Available Stat? No.
Description The ristocetin response curve is used to identify von Willebrand disease type 2B. This is a rare "gain of function" form of von Willebrand disease in which von Willebrand factor binds platelets excessively. The platelet count is usually reduced in von Willebrand disease type 2B.
Reference Interval The results are interpreted by a pathologist.
Associated With Bleeding disorders
Associated With Von Willebrand disease
© Copyright by the University of Alabama at Birmingham
Top of Page