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Difference in various analytes between capillary and venous blood after CO rebreathing. Horizontal lines indicate the mean bias (solid line) and the upper and lower 95% CI (dashed lines). Note: Average of sites—average of both sampling sites (VEN and CAP); Hbmass—haemoglobin mass; ΔCOHb%—change in carboxyhaemoglobin percentage; RBCV—red blood cell volume; BV—blood volume; PV—plasma volume.
