What tube would A phlebotomist collect erthrocyte sedimentation rate?

A phlebotomist would collect the erythrocyte sedimentation rate (ESR) using a lavender or purple top tube, which contains EDTA as an anticoagulant. This tube is specifically designed to preserve the blood sample for hematological tests. It's important to handle the sample properly and perform the test within the recommended timeframe to ensure accurate results.