THE measurement of the packed red-cell volume (or hematocrit) of the venous blood has long been recognized as a useful aid in the study of blood in a large number of clinical conditions. The technic ...

Credit: Becton, Dickinson and Company. The system consists of a capillary blood collection tube and a finger sleeve that is intended for use by a trained health care provider, without the need of a ...

The specimen of choice that enables the collection of small blood volumes from neonatal or critically ill patients is a capillary blood specimen. This specimen type has gained favour with many ...