19/11/2025
๐ What We Do Wednesday! ๐
๐ฉธPCVs ๐ฉธ
๐พ Those of you that saw lovely Pickleโs story on Friday will have seen us talking about one of the laboratory tests we regularly perform, a Packed Cell Volume or PCV.
๐พ This simple test, especially when combined with measuring the protein concentration in the serum can provide a wealth of information.
๐พ This test requires a small blood sample to be collected and mixed with anticoagulant. Very thin glass tubes are then filled with the blood.
๐พ These tubes are then placed in a centrifuge, a lab machine that spins the sample quickly, separating the heavier red blood cells from the lighter white blood cells and the fluid component of blood.
๐พ The centrifuged sample consists of a red section of red blood cells, tightly packed together hence the test name, a narrow white band above of white blood cells and a straw coloured liquid above. Measuring the proportion of the sample that is red blood cells provides the PCV value.
๐พ Snapping the tube and using a refractometer to measure the concentration of protein within the liquid serum component also gives additional information.
๐พ The two values together can indicate or rule out problems such as anaemia, haemorrhage, dehydration and protein-losing conditions.
๐พ Taking sequential PCVs can also monitor for deterioration and response to treatment, providing vital information.
๐พ Our vets will discuss the test with you if they believe a PCV would provide us with useful information regarding your pets condition.