Exam (elaborations)
NHCO TUBE ADDITIVES AND YIELD Q&A
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NHCO TUBE ADDITIVES AND YIELD Q&A
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PHLEBOTOMY CERTIFICATION EXAMQUESTIONS AND ANSWERS
Capillary Puncture - Answer-3rd or 4th finger for adults, heel stick for infants; Lancet cut
across ridges; hold the tube horizontal when filling. Don't squeeze finger too tightly or
milk the finger. Wipe off 1st drop.
The vein can collapse - Answer-If you pull on the plunger of the syringe too hard or too
quickly during a draw or you use too strong of a vacuum for the vein, this can happen...
Anticoagulant - Answer-An agent used to prevent blood clotting and to keep the
specimen whole blood
Red top - Answer-NO ADDITIVE --- Clot Forms ----Serum used for Chemistries,
Electrolytes, Thyroids (TSH, T4), Hormone, Liver, Kidney, Lipid studies, CMP, BMP.
Tiger top - Answer-Aka Red/Gray top: Clot activator additive - Clot Forms - SERUM
STUDIES
Lavender top - Answer-EDTA additive - No Clot - WHOLE BLOOD for: Complete blood
count (CBC), Blood smear, Blood banking (ABO/Rh), ESR, HCT, Hmg,Glyco Alc
****Must be filled sufficiently and inverted (gentle rocked) several times****
Gold Top - Answer-Clot activator additive - Clot Forms - SERUM Studies
Grey top - Answer-Sodium Fluoride/Potassium oxalate - Glucose, Alcohol, FBS
Light blue top - Answer-Sodium citrate additive - No Clot - Used for coagulation studies
(PT, PTT) ****Tube must be filled to the proper level and inverted (gentle rocked)
several times****
Wipe away the first drop - Answer-We do this to remove tissue juices, skin cells,
alcohol, contaminates, avoid activating clotting process, avoid producing incorrect
results, avoid diluting specimen.
The basilic, cephilic, and the median - Answer-What veins are in the antecubical area?
Hemoconcentration - Answer-This is the increase of the cellular/solid elements in direct
ratio to plasma This can be caused by "pumping of the fist" and begins after the
tourniquet is left on longer than 1 minute.
Provodine/iodine - Answer-Agent used on the skin to sterilize the area.
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