RISTOCETIN COFACTOR
Marquette General Health System

General Info

HLAB/HOL Code

  VW

MGH LIS Test No

  329

Schedule

  Daily

Testing Time

  1 day

Testing Lab

  Marquette General Hospital

QORR Test Code

  VW

Specimen Info

Type

  1 Light-Blue Top (Citrate)  

Volume

  2.0 ml (1.0min plasma)

Temperature

  frozen on dry ice

Preservative

   

Collection Info

  Spin specimen with a Sure-Sep II or spindown, remove plasma, and spin
plasma again.  Place plasma in plastic vial and freeze immediately.
     A.  Sure Sep II or double centrifuging specimens are critical for accurate
           results as platelet contamination may cause spurious results.
      
 
Specimen Acceptability

Methods
Platelet aggregation measured turbidimetricly to aid in the diagnosis of Von willebrand disease.

Clinical Utilities
Quantification of Ristocetin cofactor activity in plasma.

CPT Codes
85245

The CPT codes provided are based on AMA guidelines
and are for informational purposes only. CPT coding is the
sole responsibility of the billing party. Please direct any questions
regarding coding to the payer being billed.

Reference Range
50 - 200%

Pre-Term-50 - 200%

Component Information

Collection Notes

Additional Comments

 

Questions or Comments email support@mgh.org

Reference Lab Home Page
Laboratory Main Page
Marquette General Health System Home Page