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September 6, 2021

Study finds Tasso at-home device beneficial for Covid-19 antibody test

The Tasso-SST blood sampling kit uses a vacuum to draw blood from capillaries under the skin in a few minutes.

Researchers at the University of Washington (UW) School of Medicine in Seattle, US, have reported that in a study the Tasso device to draw blood samples in the at-home setting was found to be useful for measuring antibodies against SARS-CoV-2.

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Named Tasso-SST blood sampling kit, the device utilises a gentle vacuum to collect blood from capillaries under the skin in a few minutes.

To obtain a blood sample with the Tasso-SST blood sampling kit, a user has to clean an area on the upper arm and attach the device, which comes with an adhesive patch.

The user can then push a button on the device to release a small, spring-loaded lancet that pierces the skin.

The device creates a vacuum that aids in drawing blood through the needle prick from the network of capillary blood vessels, located under the skin, in a few minutes.

The capillary blood is collected in a tube, which can be removed, closed with a lid and sent to a laboratory for evaluation.

According to the findings, the device could be used by patients to draw blood at home for various tests that presently require them to go to a clinic or laboratory, scientists noted.

The study enrolled 56 subjects who had previously been infected by SARS-CoV-2 and recovered.

The healthy controls in the study included 33 individuals without a history of SARS-CoV-2 infection.

The blood test was used to check if the immune systems of recovered subjects had created sufficient antibodies against the virus and could be used for donation to aid in treating subjects with current infections.

For the study, blood was collected three ways: either by self-collection or under supervision using a Tasso kit or using the standard technique of a phlebotomist collecting a sample drawn from a vein.

All the blood samples were tested simultaneously for the antibodies using the EuroImmun anti-SARS-CoV-2 S1 IgG assay.

No substantial differences between the samples obtained by the three methods were found in the study, the university noted.

UW Department of Laboratory Medicine and Pathology associate professor Dr Chihiro Morishima said: “There was nearly perfect correlation between the results from the venous blood and the capillary blood samples.

“This was a ‘proof-of-principle’ study. It shows that the approach can work. But we need to verify its accuracy and reliability for other tests before it can be used routinely for clinical care or research.”

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GlobalData's APAC Medical Devices Industry Landscape – 2022 free study breaks down the APAC medical devices market by segment and region and includes insights on local and global competitors, pipeline product developments, clinical trials studies, and significant deals in the industry. The APAC medical device industry witnessed significant developments, launches, implementations, and adoption of new medical device technologies in the past decade, however the high cost of devices, regulatory hurdles, reimbursement pressure, and healthcare budget constraints have challenged market expansion across various territories and segments. APAC is the fastest growing regional market for medical device clinical trials, with China and Japan emerging as major clinical trial hotspots. The growth in medical device clinical trials in the APAC region is attributed to an increase in research partnerships between biopharma companies and clinical research organizations (CROs). This report also provides an in-depth analysis of the medical device market's opportunities and challenges, the influence of COVID-19 on the market, and government activities aimed to develop the APAC medical device market.
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