Hematology 1 Practice Test

The main idea is how labeling and intended use differ for these tubes. Both tubes contain EDTA, but pink-top tubes are designated for blood-bank/transfusion testing. They include an extra crossmatch label to capture patient information specific to compatibility testing, ensuring the sample is correctly linked to the crossmatch request and the patient’s transfusion record. This labeling helps prevent mix-ups in the transfusion workflow.

Lavender-top tubes are the standard EDTA tubes used for routine hematology tests like the CBC and do not carry the crossmatch labeling. They’re not specifically intended for transfusion services, so they don’t include the extra crossmatch information.

Comments about volume aren’t the defining feature here; the key distinction is the specialized crossmatch labeling on the pink-top tube for blood banking.