After meals venous levels are somewhat lower than capillary or arterial blood; a common estimate is about 10%.

Arterial, capillary and venous blood have comparable glucose levels in a fasting individual.

The solute transport rates are assessed by the rates of their equilibration between the peritoneal capillary blood and dialysate.

This ratio can be determined for any solute that is transported from the capillary blood to the dialysate.

Tests commonly conducted on capillary blood are:

In some fish, capillary blood flows in the opposite direction to the water, causing countercurrent exchange.

This means a good indicator of disease would be looking at trypanosome density in capillary blood and connective tissue.

A drop of capillary blood is obtained with an automated finger-prick, which is almost painless.

Further, the oxygen concentration (partial pressure) in the pulmonary artery is taken to be representative of capillary blood.

The fluid that is filtered from the capillary blood into Bowman's space is called filtrate or primary urine.