Master Phlebotomy Certification Nha Ascp with 200 free flashcards. Study using spaced repetition and focus mode for effective learning in Medicine.
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What is the correct order of draw for venipuncture (ETS)?
1. Blood cultures (yellow SPS)
2. Light blue (sodium citrate)
3. Serum tubes (red/gold, SST)
4. Green (heparin)
5. Lavender (EDTA)
6. Gray (sodium fluoride)
Q · 1 of 200
What is the correct order of draw for venipuncture (ETS)?
Q · 2 of 200
Why must the order of draw be followed?
Q · 3 of 200
Which tube is drawn first in the order of draw?
1. Blood cultures (yellow SPS)
2. Light blue (sodium citrate)
3. Serum tubes (red/gold, SST)
4. Green (heparin)
5. Lavender (EDTA)
6. Gray (sodium fluoride)
To prevent cross-contamination of additives between tubes, which can alter test results.
Blood culture bottles/tubes (yellow SPS) to maintain sterility.
The light blue sodium citrate tube (coagulation studies).
To minimize contamination by tissue thromboplastin and other additives that could affect clotting results.
After light blue and before tubes containing anticoagulants like heparin, EDTA, and fluoride.
After serum tubes and before lavender (EDTA) and gray (fluoride) tubes.
After green (heparin) and before gray (sodium fluoride).
The gray top tube (sodium fluoride/potassium oxalate).
A discard tube (non-additive or another citrate tube) is drawn first to clear air from the tubing before the light blue tube.
No — the same CLSI order of draw sequence applies when filling tubes from a syringe.
"Stop Light Red Green Yellow Gray" for Sterile (blood culture), Light blue, Red/SST, Green, Yellow/Lavender, Gray.
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