Pathology Handbook

Recent changes for Ristocetin Cofactor
Date	Field	Changed From	Changed To
4th March 2026	Collection & Request Instructions	Specimens cannot be analysed or re-analysed greater than 6 hours after collection. Request form and collection instruction click here: Multimer Request Form.pdf	Specimens cannot be analysed or re-analysed greater than 6 hours after collection. Request form and collection instruction click here: VWF Request Form.pdf
4th March 2026	Collection & Request Instructions	Specimens cannot be analysed or re-analysed greater than 6 hours after collection. https://pathology.alfred.org.au/handbook/downloads/haem/Multimer%20Request%20Form.pdf	Specimens cannot be analysed or re-analysed greater than 6 hours after collection. Request form and collection instruction click here: Multimer Request Form.pdf
4th March 2026	Collection & Request Instructions	Specimens cannot be analysed or re-analysed greater than 6 hours after collection.	Specimens cannot be analysed or re-analysed greater than 6 hours after collection. https://pathology.alfred.org.au/handbook/downloads/haem/Multimer%20Request%20Form.pdf

Alternative Names:

RiCOF

Laboratory:

Haematology

Test Code:

RCOF

Specimen Types:

Plasma

Container Types:

Sodium Citrate

Adults Volume or Mass:

2.7 mL

Collection & Request Instructions:

Specimens cannot be analysed or re-analysed greater than 6 hours after collection.

Request form and collection instruction click here: VWF Request Form.pdf

Transport Instructions between Sites and/or Laboratories:

Room Temperature

Additional Notes:

Reference Range: 50-150 %