What is the primary purpose of verifying a patient's identity before drawing blood?

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Verifying a patient’s identity before drawing blood focuses on making sure the right person is tested and that the specimen is labeled for the correct patient. This step prevents misidentification and mix-ups that could lead to erroneous results, which in turn could cause misdiagnosis, inappropriate treatment, or safety risks for the patient. In practice, you confirm identity using at least two identifiers—like the patient’s full name and date of birth—by checking them against the wristband and the test order before collection. After drawing the blood, the label should match the patient exactly, keeping the sample linked to the correct individual and reducing lab or care errors. The other options aren’t the primary reason for this verification: determining blood type happens as a separate test, approving orders is the physician’s duty, and assessing pain level isn’t about ensuring the correct patient or correct labeling.