Discrepancy Resolution (ABO, Rh, Other Major Blood Groups)

Test description

Phenotype (antigen) testing of the patient's red cells is performed to resolve variant or discordant results. Testing with antisera from different licensed commercial companies is performed. 

Note: This testing should not be ordered on patients who have been recently transfused (within 120 days) or have had a bone marrow or stem cell transplant.  

Discrepancy Resolution ABO Rh Other Major Blood Groups (PDF) 

Test Catalogue

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Specimen and requisition requirements

Specimen:

One (1) full 5-7 ml EDTA (lavender) tube mixed thoroughly by gentle agitation.
Label specimen with the required minimum information: patient’s last name, first name, PHIN or hospital number or other unique identifier, date of collection, facility name, and phlebotomist initials.

Complete Requisition (must include):

  • Patient's last name, first name, date of birth and PHIN or hospital number or other unique identifier
  • Facility Name
  • Physician/Health Care Provider name
  • Phlebotomist name, classification, initial
  • Date/time  of collection
  • Name, facility, address, contact number of individual to whom the report will be sent

Requisition

Request for Miscellaneous Testing Requisition (PDF) 
(Electronic Fillable Form)

Pre-shipping storage

Recommended Refrigeration 1-10°C.

Shipping instructions

Submit samples as soon as possible after collection.
 

Shipping
Ship in a container that will maintain temperature at ≥1°C.
Select shipping method for container to arrive at testing site within 48 hours.

Note: Protect from freezing.

Send to

Canadian Blood Services
Winnipeg Centre
Diagnostic  Services Crossmatch Laboratory
777 William Ave.
Winnipeg, MB R3E 3R4
Tel: 204-789-1085
Fax: 204-779-8593