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Perinatal Services

Diagnostic Services: Winnipeg Centre

Canadian Blood Services provides screening of pregnant women for blood type and red cell antibodies. This testing assists health care providers to ensure appropriate management of the pregnancy for both the mother and baby in order to prevent Hemolytic Disease of the Fetus and Newborn.

In addition, the Laboratory also provides serological investigation reference services to facilities that perform post natal testing.

Perinatal Test Request / Sample Requirements

Test

Sample Requirements

Form / Comments

    * Follow collection procedure described on each requisition
  • Initial Testing for Pregnant Women
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Test all pregnant women at their first visit in every pregnancy.
  • 26 -28 Week Follow-up Testing for Pregnant Women
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Test all Rh Negative mothers at approximately 26 - 28 weeks gestation. Draw sample prior to RhIG injection.
  • Test Rh positive mothers who have only been tested once previously.
  • Pregnant Women with Known Clinically Significant Antibodies
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Submit samples as requested on report.
  • Antibody Investigation Antibody Referral
EDTA
3 X 7mL
Requisition: Request for Perinatal Testing (PDF)
  • Kleihauer-Betke – Quantitative Test for Fetal Bleed
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Father
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Submit sample when requested by Canadian Blood Services.
  • Postnatal
EDTA
2 tubes
Requisition: Request for Perinatal Testing (PDF)
  • Submit if mother is Rh negative, has a clinically significant antibody, or the baby shows signs of HDFN
  • Collect sample approximately one hour following delivery
  • Cord / Neonate
EDTA
1 tube
or heel prick sample
Requisition: Request for Cord / Neonate Blood Testing (PDF)
  • Submit with mother’s sample
  • Clearly identify twin samples (i.e. Twin A, Twin B).