Veins not used for routine phlebotomy?

Veins not commonly used for routine phlebotomy include the small veins in the hand and wrist, which may be more challenging to access and can be more painful for patients. Additionally, veins in the feet and ankles are generally avoided due to their deeper location and the risk of complications. Certain veins, like the jugular vein in the neck or femoral vein in the groin, are typically reserved for specialized procedures rather than routine blood draws. Lastly, veins in individuals with certain medical conditions or those with a history of difficult venous access may also be avoided.