to keep the blood from clotting and becoming unusable
lavender
Lavender
A lavender or pink tube is usually used to draw B12.
For a HgA1c you would need a lavender top tube.
lavender
blue tube
lavender
lavender
lavender
White blood count is part of the CBC, therefore use a lavender top tube.
Lavender
A lavender tube typically contains an additive called EDTA and is used for collecting whole blood for hematological testing, such as complete blood count (CBC), blood typing, and blood cell morphology examination. It is commonly used for tests that require anticoagulated whole blood samples.