Crossmatch Laboratory Services

Diagnostic Services: AB - NWT

PDF Version

Downloadable: AB-NWT Crossmatch Test Request – Sample Requirements (PDF)

Diagnostic Services AB/NWT provides transfusion medicine (pre-transfusion compatibility) services for a number of health care facilities located in northern Alberta and parts of the Northwest Territories which currently do not or cannot perform these tests.

Crossmatch Services

  • Group
  • Type and Screen
  • Crossmatch
  • Direct Antiglobulin Test (DAT)
  • Transfusion Reaction Investigation

Crossmatch Test Request / Sample Requirements

Test

Sample Requirements

Form / Comments
  • Group
    • ABO/Rh type
 EDTA
1 X 7mL

Requisition:Blood Transfusion Service Requisition (PDF)

  • Order if requesting platelet or plasma components for patient with no blood grouping result done by Canadian Blood Services on a sample collected for crossmatch or referral investigation.
  • May be ordered to follow a non-group specific bone marrow or stem cell transplant.
  • Type and Screen
    • ABO/Rh type
    • Antibody Screen
 EDTA
2X 7mL

Requisition:Blood Transfusion Service Requisition (PDF)

  • Order when the need for transfusion is not certain.
  • If an antibody is identified, two units will be crossmatched and sent to hospital.
  • If no irregular antibodies are detected and components are requested, an electronic crossmatch can be performed and components made available.
  • Crossmatch
    • ABO/Rh type
    • Antibody Screen
    • Crossmatch
 EDTA
2 X 7mL
(Additional sample may be required if patient has antibodies)

Requisition:Blood Transfusion Service Requisition (PDF)

  • Order when red blood cell units are required for transfusion.
  • Indicate number of units that are requested and when they are required
  • If an in-date Type and Screen sample is available, an additional sample is not required.
  • DAT
    • Direct Antiglobulin Test
 EDTA
1 X 7mL

Requisition:Blood Transfusion Service Requisition (PDF)

  • Will test using anti-IgG and anti-C3d if initial polyspecific DAT is positive
  • Transfusion Reaction Investigation
    (On post transfusion sample)
    • Hemolysis check
    • DAT
    • ABO/Rh
    • Further investigation as necessary
 EDTA
2X 7mL		 Requisition: Transfusion Reaction Investigation Requisition
  • Also submit a pre-transfusion sample if initial testing was not performed by Canadian Blood Services
  • TRALI investigation
 Pre-TRALI
1 x 7mL separated serum (not collected in SST gel) Send frozen

Post-TRALI
1 x 7mL separated serum (not collected in SST gel) Send frozen
and
1 x 7mL unopened EDTA (for DNA testing) Send at 4ºC
 

Requisition: TRALI Patient Data form (PDF)

NOTIFY BEFORE SAMPLE SHIPMENT:

Platelet Immunology Laboratory
Phone: 204-789-1152
Fax: 204-789-1186
SHIP SAMPLES IMMEDIATELY TO:
Platelet Immunology Laboratory
Canadian Blood Services
777 William Ave
Winnipeg, MB R3E 3R4

or

To your nearest Canadian Blood Services Centre