Testing vials of blood left over after patients undergo tests could help detect everything from the ill effects of environmental toxins to the true prevalence of some chronic diseases
But there is another bodily fluid that often goes to waste, and the head of Canada’s“Waste blood,” is how CITF executive director Tim Evans describes the vials of blood left over after patients undergo routine tests. Rather than ditch those specimens – the usual practice – Dr.
As the COVID-19 Immunity Task Force winds down, Dr. Evans is leading a working group on waste blood that includes representatives from academia, provincial public health labs, the Public Health Agency of Canada,Their intention is to have a proposal, including a request for federal funding, ready by the end of the year for a permanent waste-blood testing network that would go beyond one-off research projects forged in the fire of a public-health emergency. They’ve tentatively dubbed it HemaNet.
Getting ethics approvals, privacy assessments and data-sharing agreements with every provincial and hospital lab she hoped to include proved “cumbersome and difficult,” even though Dr. Money and her research partners were not looking for information that could identify patients. She just wanted labs to test prenatal blood samples for antibodies to SARS-CoV-2 and share the de-identified results for population-level snapshots of how widely the virus had spread.
Caroline Quach-Thanh, a pediatric infectious disease doctor and medical microbiologist at Sainte-Justine children’s hospital in Montreal, foresees a smoother process for testing pediatric waste blood now that an umbrella group called POPCORN has been created with funding from the Canadian Institutes of Health Research.
General waste-blood testing could also be a source of knowledge about less common pathogens, such as those carried by insects making their way north as the climate changes.
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