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Perinatal Laboratory Services

Diagnostic Services: AB - NWT

Diagnostic Services AB/NWT provides screening of pregnant women for blood type and red cell antibodies under a program funded by Alberta Health and Wellness. This screening provides information to assist physicians, midwives, and nurse practitioners in ensuring the appropriate management of a pregnancy for both the mother and baby in order to prevent Hemolytic Disease of the Fetus and Newborn. Testing is provided in Edmonton for: Alberta, Northwest Territories, western Nunavut, and Lloydminster, Saskatchewan.

Information for patients needing Rh immune globulin can be found here (PDF). This information may be helpful when obtaining informed consent from patients.

 

Perinatal Test Request / Sample Requirements

 

Test

Sample Requirements

Form / Comments

  • Initial Testing for Pregnant Women
    • ABO/Rh type
    • Antibody Screen
EDTA 1 X 7mL Requisition: Prenatal testing – Initial Screening for Pregnant Women
  • Requisition provided by Service Alberta and can be obtained by registering at the following website: https://secure5.datagroup.ca/acsc/request_ext.asp
  • It is a two part requisition and also includes prenatal screening done by the Provincial Laboratory of Alberta (Virology). Because each part of this requisition goes to a separate site, it is critical that both pages be fully completed.
  • Test all pregnant women at their first visit in every pregnancy.
  • 26 Week Follow-up Testing
    • ABO/Rh type
    • Antibody Screen
    • Antibody investigation
    • Antibody titration, if applicable
EDTA 1X 7mL

2X 7mL when antibody present
Requisition: Perinatal Follow-up Testing for Red Blood Cell Serology (PDF)
  • Test all Rh Negative mothers at approximately 26 weeks gestation (24-28 weeks is acceptable.) Draw sample prior to RhIG injection.
  • Test Rh positive mothers who are in their first pregnancy, or who have only been tested once previously.
  • Test if antibody was detected on initial testing.
  • Father
    • ABO/Rh type
    • Phenotype
EDTA 1 X 7mL Requisition: Perinatal Follow-up Testing for Red Blood Cell Serology (PDF)
  • Only submit sample when requested by Canadian Blood Services.
  • Postnatal
    • ABO/Rh type
    • Antibody Screen
    • Antibody investigation
EDTA 1X 7mL Requisition: Perinatal Follow-up Testing for Red Blood Cell Serology (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
  • Newborn (cord)
    • ABO/Rh type
    • DAT
    • Phenotype
Red Top
1X 7mL
or heel prick

Requisition: Perinatal Follow-up Testing for Red Blood Cell Serology (PDF)

  • Submit with mother’s sample
  • Clearly identify twin samples (i.e. Twin A, Twin B).