This system is based on current Manitoba Pre-Op Guidelines.

This guideline is intended for elective surgery, it does not apply to patients undergoing cardiac surgery or cesarean section.

Complex or uncommon medical or surgical problems may warrant further tests.

Test results are valid for 6 months provided there has been no interim change in the patient's condition.

Please refer to the Preoperative Lab Test Guidelines – Algorithm (PDF), provided by the WRHA for details.

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My patient undergoing...

  • Blood loss < 500ml
  • No significant fluid shift
  • Day surgery

  • Blood loss > 500ml
  • Significant fluid shift
  • Planned hospitalization

See common examples >>

Age category:


Does my patient have any of the following:

Does my patient take any of the following medications?




The following preoperative tests are recommended: