Final answer:
The cleansing agent that is typically not used on venipuncture for the collection of blood cultures or blood alcohol specimens is ethanol. Other cleansing agents such as iodine or chlorhexidine are more suitable for this purpose.
Step-by-step explanation:
The cleansing agent that is typically not used on venipuncture for the collection of blood cultures or blood alcohol specimens is ethanol.
While ethanol is commonly used as a disinfectant in various laboratory procedures, it is not suitable for venipuncture when collecting blood cultures or blood alcohol specimens. This is because ethanol can interfere with the accuracy of the test results, especially when measuring blood alcohol levels.
Instead, other cleansing agents such as iodine or chlorhexidine are typically used for venipuncture when collecting blood cultures or blood alcohol specimens.