A red tube is a zero additive tube, when testing for Lupus we need whole blood, so that means an anticoagulant is needed a. EDTA is in Lavender or Pink Hematology tubes and is used for ANA tests.
Green or Red gel tube!
purple top
pink
lead levels tube color
Lavender.
red
blue
Blue
red top
Lavender
red top
purple top
red top
Purple
Yellow tops /acd tubes