Final answer:
The type of tube used for a complete blood count (CBC) is Lavender with EDTA. EDTA is an anticoagulant that prevents blood from coagulating and preserves the integrity of the blood sample for accurate analysis.
Step-by-step explanation:
The type of tube used for a complete blood count (CBC) is Lavender with EDTA. The purpose of using this tube is to prevent blood from coagulating and preserve the integrity of the blood sample for accurate analysis. EDTA (ethylene diamine tetraacetate) is an anticoagulant that binds to calcium, which is necessary for blood clotting.