It is the single largest component of human blood and makes up about 55% of its volume. “Plasma is a clear, pale yellow liquid portion of the blood, that remains after the red cells, white cells and other cellular components are removed. Health Services Laboratories in London is also on the case, using blood viscosity tests to monitor inflammatory status in certain groups of Covid-19 patients, exploring the possibility that high inflammatory markers might indicate the need for alternative strategies for stroke prevention in these patients. Clinicians have been carrying out viscometry tests on all Covid-19 patients to establish a link between blood viscosity and the viral disease, and explore how it may relate to disease severity and recovery.
They work by drawing a small sample of plasma through a narrow capillary using a constant pressure and measuring the time taken for the sample to move a known distance.Īt Addenbrookes Hospital in the UK, the company’s equipment is now being used to explore how best to understand and treat Covid-19. Benson Viscometers, based in Haverfordwest, Wales is the market leader in the UK and Ireland for clinical viscometers, instruments which can be used to measure the viscosity, or thickness, of blood.
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