Perinatal Testing Services - Vancouver, BC
Test Catalogue
Contact Information
Canadian Blood Services
Vancouver Centre
Diagnostic Services
4750 Oak St.
Vancouver, B.C.V6H 2N9
BC Diagnostic Services Contact Information
Recommended Perinatal Test Guidelines
Recommended Perinatal Test Guidelines BC (PDF)
Canadian Blood Services (CBS) provides screening of pregnant women for blood type and red blood cell antibodies under a program funded by BC Ministry of Health. 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.
| Clinical scenario | Sample submission timelines |
|---|---|
| First Pregnancy ABO and Rh(D) typing Red Cell Antibody Screen | Initial visit (usually during first trimester) and at 26-28 weeks gestation |
| Rh positive – previous report on file – antibody screen negative ABO and Rh(D) typing Red Cell Antibody Screen | Initial visit (usually during first trimester) |
| Rh negative – antibody screen negative ABO and Rh(D) typing Red Cell Antibody Screen | Initial visit (usually during first trimester) and at 26-28 weeks gestation (sample to be collected prior to RhIG injection) |
Mothers with clinically significant antibodies detected ABO and Rh(D) typing Red Cell Antibody identification/exclusions Titration | Maternal specimens are requested monthly for antibody titration and exclusion of other clinically significant antibodies. |
Mothers who have clinically significant antibodies with critical titres ABO and Rh(D) typing Red Cell Antibody identification / exclusions | A clinically significant antibody will no longer be titered monthly once it has reached a critical value of ‘16’. If the clinically significant antibody identified is anti-K, titration is not required. Detection of anti-K is a critical result regardless of titre. |
Available Perinatal Tests
Perinatal Requisitions and Forms
TEST | REQUISITIONS AND FORMS |
|---|---|
Maternal Routine Testing (ABO/Rh Typing/Antibody Screen) | Perinatal Screen Request Requisition BC (PDF) (Electronic Fillable Form) |
Father's Rh Typing (when maternal Rh is negative) | Perinatal Screen Request Requisition BC (PDF) (Electronic Fillable Form) |
| ABO RH Typing/Antibody Screen “Fertility” Testing | Perinatal Screen Request Requisition BC (PDF) |
| Cord/Neonate Testing (ABO/Rh/DAT - HDFN Investigation) | Antibody Investigation Requisition BC (PDF) |
Fetal Genotyping from Maternal Plasma Requisitions Testing is only available for Canadian residents. Please contact International Blood Group Reference Laboratory for testing inquires. https://ibgrl.blood.co.uk/services/molecular-diagnostics/fetal-genotyping-diagnostic/ |
International Blood Group Reference Laboratory Requisition DS (PDF) (Use the link to download the Fetal Genotyping from Maternal Blood form FRM4674) Fetal Genotyping from Maternal Plasma (PDF) Guidance for Completion of International Blood Group Laboratory Requisition |
| Fetal Genotyping from Maternal Plasma Consent | Consent_for_Release_of_Neonatal_Test_Results_Form_BC.pdf (PDF) |
| Fetal Genotyping from Maternal Plasma Instructions | Fetal Genotyping on Maternal Plasma Maternal Fetal Medicine Instructions (PDF) |
| RHD Genotyping | Request for RHD Genotyping (PDF) Demande de génotypage RhD (PDF) |
| Perinatal Supplies |
Critical Values
Test interpretation — Perinatal critical values
Diagnostic Services will provide a verbal report to the requesting facility or physician in the following cases:
- Anti-K is detected in maternal sample (when first time detected in the pregnancy and/or with a new pregnancy).
- Clinically significant antibody with a titre ≥ 16 in maternal sample (when first time detected in the pregnancy and/or with a new pregnancy).
- Significant increase in antibody titre detected during a pregnancy.
- New clinically significant antibody detected in the third trimester of the pregnancy.
Requesting Test Results
Perinatal patient test results for British Columbia and Yukon are available by faxed request.
Monday to Friday 8 a.m. – 4 p.m. PT
Saturday and Sunday: Closed
Statutory holidays: Closed
Please use clinic/health care provider/hospital letterhead when requesting results and provide the following information:
•Patient first and last name
•PHN (Personal Health Number)
•Date of birth
•Requesting physician
•Facility/clinic fax number
Fax completed clinic / health care provider letterhead to Vancouver Diagnostic Services at: 604-874-6582
Requesting Perinatal Supplies/Requisitions
The following perinatal supplies are available for British Columbia sample collection sites
- Perinatal Screen Request Requisition (pads of 50)
- 6 mL EDTA (lavender) tubes
Complete Perinatal Supplies Request Form and indicate quantity required.
Fax completed Perinatal Supplies Request Form to 604-874-6582 or mail to:
Canadian Blood Services
Vancouver Centre
Diagnostic Services Laboratory
4750 Oak Street
Vancouver, BC, V6H 2N9
Tel: 604-707-3434