Phlebotomy is the practice of blood draw or venipuncture. It’s a fundamental tool for the any diagnosis conducted in any medical field.
Phlebotomy can also be used in the treatment of different medical conditions such as: hemochromatosis, olycythemia vera, porphyria cutanea tarda, sickle cell disease, nonalcoholic fatty liver disease, etc.
Phlebotomy is, therefore, a vein injection procedure that can be complexified by the invisibility of the patient’s vein, particularly if they were are old, very young (babies), obese, etc. or having a skin condition that affects the visibility of their veins.
In these cases, vein finders are essential to make making the whole process easier and safer, because repetitive needle insertion can be very painful and can cause damage to the vein.
SIFVEIN vein detectors use a near-infrared technology that interacts with the blood color and illuminates the veins beneath the skin surface, making a visible vein map on the patient’s hand, arm, face, etc.
Reference : What Is Phlebotomy?.