Purple-Top Blood Collection Tube - EDTA Anticoagulant for Hematology Tests #244831 (License: Personal Use)

The illustrated tube features a lavender or purple cap, indicating it contains ethylenediaminetetraacetic acid (EDTA) as an anticoagulant, which binds calcium ions to prevent coagulation. It’s standard for hematology tests like complete blood count (CBC), erythrocyte sedimentation rate, and blood smears. The clear body with label space allows for patient identification and sample tracking.

Used on medical websites, lab supply catalogs, educational health content, and clinical training materials to illustrate proper specimen collection containers. Matches user intent for understanding diagnostic procedures, phlebotomy equipment, or preparing for blood tests.