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6th Floor, Clinic Bldg. Specimen Transportation
Why is it important to use a discard tube when collecting blood with a winged infusion set directly into evacuated tubes?The discard tube must be used to prime the tubing of the collection set, which will assure maintenance of the proper anticoagulant/blood ratio in the first tube filled.
Which tube should be first in order to draw in phlebotomy?Transferring a sample from one collection tube to another or mixing blood from different collection tubes must be avoided.. First - blood culture bottle or tube (yellow or yellow-black top). Second - coagulation tube (light blue top). ... . Third - non-additive tube (red top). When using a butterfly needle and evacuated tubes which tube should be drawn first?NOTE: When using a winged blood collection set for venipuncture and a coagulation tube is the first tube needed, first draw a discard tube (plain red top or light blue top). The discard tube does not need to be filled completely. 1.
When following the order of draw which of these tube should always come first?first tube to be drawn is a coagulation tube, a discard tube must be drawn first. The discard tube must be a non-additive, no clot activator, or a coagulation tube. NO clot activator or additive tubes should be drawn before coagulation studies.
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