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Crossmatch Services

Diagnostic Services: Winnipeg Centre

Canadian Blood Services provides transfusion medicine services (pre-transfusion testing, compatibility testing, and red cell and platelet components) for facilities in Winnipeg and rural Manitoba that currently do not perform these tests.

In addition, the Laboratory also provides serological investigation reference services and has access to rare cells and anti-sera that may be useful for identifying antibodies to high and low incidence antigens.

Crossmatch Test Request / Sample Requirements

Test

Sample Requirements

Form / Comments

    * Follow collection procedure described on each requisition
  • Type and Screen
Adults:
EDTA 1X 7mL

Children:
EDTA 1 X 5mL

Infants:
EDTA 1-2 mL
Sample Requirements for Neonate Collection (PDF)

Requisition: Request for Blood Components (PDF)

Request for Pre-transfusion Testing (PDF)

  • Order when the need for transfusion is not certain.
  • If antibody screen is negative, blood can be made available utilizing the in-date sample.
  • Crossmatch
Adults:
EDTA 1X 7mL

Children:
EDTA 1 X 5mL

Infants:
EDTA 1-2 mL (Additional sample may be required if patient has antibodies)

Requisition: Request for Blood Components (PDF)

Request for Pre-transfusion Testing (PDF)

  • Order when red blood cell units are required.
  • Indicate number of units required.
  • If an in-date Type and Screen sample is available, an additional sample is not required.
  • Transfusion Reaction Investigation
EDTA
2 X 7mL
Requisition: Transfusion Reaction Investigation (PDF)
  • Also submit a new crossmatch sample if red blood cell units are required.
  • Also submit a pre-transfusion sample if initial testing was not performed by Canadian Blood Services
  • Also submit segments from the implicated donor unit(s).
  • TRALI Investigation
Pre-TRALI
1 x 7mL serum (not collected in SST gel)
Post-TRALI
1 x 7mL serum (not collected in SST gel)
and
1 x 7mL unopened EDTA (for DNA testing)
Requisition: TRALI Patient Data form  (PDF)
  • Canadian Blood Services will provide the TRALI form when needed
  • Send TRALI investigation samples to the Crossmatch / Accession Laboratory immediately
  • Also submit additional samples with a completed Transfusion Reaction Investigation requisition
  • Crossmatch Laboratory will refer samples to the Platelet Immunology Laboratory
  • DAT
Adults:
EDTA 1X 7mL

Children:
EDTA 1 X 5mL

Infants:
EDTA 1-2 mL
Sample Requirements for Neonate Collection (PDF)

Requisition: Request for Blood Components (PDF)

Request for Pre-transfusion Testing (PDF)

  • When requested with pre-transfusion testing
Requisition: Request for Miscellaneous Testing
  • When requested as a diagnostic test.

 

  • ABO/Rh Group & Antibody Screen
Adults:
EDTA 1X 7mL

Children:
EDTA 1 X 5mL

Infants:
EDTA 1-2 mL
Requisition: Request for Miscellaneous Testing (PDF)
  • When requested as a diagnostic test.
  • Cold Agglutinin Titre
    Isohemagglutinin Titre
Adults:
EDTA 1X 7mL

Children:
EDTA 1 X 5mL

Infants:
EDTA 1-2 mL
Requisition: Request for Miscellaneous Testing (PDF)
  • When requested as a diagnostic test.
  • Antibody Investigation
    Antibody Referral
EDTA
3 X 7mL
Requisition: Request for Miscellaneous Testing (PDF)