What should never be done to maintain proper phlebotomy technique?

Maintaining proper phlebotomy technique is crucial for patient safety and the accuracy of laboratory results. Leaving a tourniquet on for longer than 60 seconds can lead to hemoconcentration, which is an increase in the concentration of blood components due to the accumulation of cells and proteins in the blood sample. This can affect lab results by artificially elevating certain analytes such as potassium levels and can also cause discomfort and possible injury to the patient.

In a clinical setting, it is essential to uphold best practices for venipuncture, and this includes controlling the duration of the tourniquet application. Limiting it to no more than 60 seconds helps ensure that the blood sample reflects true physiological conditions without artifacts caused by prolonged constriction of blood vessels. Monitoring this aspect of the procedure reinforces the commitment to quality patient care and accurate diagnostic outcomes. The other options, such as labeling samples immediately, using standardized techniques for all draws, and preparing the site before each draw, contribute positively to effective phlebotomy practice and do not carry the same risks associated with extended tourniquet use.