Phlebotomy is the drawing of blood. A phlebotomist is someone with special training to do so. However, in many countries, other healthcare professionals can also draw blood (e.g., doctors, nurses, ...

DEAR DR. ROACH: My husband was diagnosed with secondary polycythemia in 2011. His hematocrit test (HCT) was 57%. He was referred to a hematologist. The hematologist would order a phlebotomy when his ...

Phlebotomy refers to drawing blood from a person’s vein with a needle. Lab tests on blood samples are important as they measure different blood components and provide information that can lead to a ...