Quick Answer: Why Is The Order Of Draw So Important?

What happens if the proper order of draw is not followed?

Not following the order of draw Contamination from other additives could interfere with test results.

Plastic or glass serum tubes containing a clot activator may cause interference in coagulation testing.

Always follow correct order of draw..

What happens if a tourniquet is left on too long?

Applying the tourniquet too tightly or leaving it on for too long causes the blood to become hemoconcentrated below the constriction. Changes to the blood below the tourniquet occur within one minute.

What may occur if the needle is removed from the arm before removing the tourniquet?

If the needle is removed from the arm before removing the tourniquet, the evacuated tube will not fill completely. 10. If a fibrin clot forms in the serum layer of a blood specimen, it will lead to inaccurate test results.

What is the importance in using the order of draw?

The order of draw is recommended for both glass and plastic venous collections tubes when drawing multiple specimens for medical laboratory testing during a single venipuncture. The purpose is to avoid possible test result error due to additive carryover. All additive tubes should be filled to their stated volumes.

Why is it important to use the correct order of draw when performing a venipuncture?

Why is it important to use the correct order of draw when performing a venipuncture? To prevent contamination of nonadditive tubes by additive tubes and cross-contamination between different types of additives that could lead to inaccurate test results.

What effect would leave a tourniquet on too long?

A prolonged tourniquet time may lead to blood pooling at the venipuncture site, a condition called hemoconcentration. Hemoconcentration can cause falsely elevated results for glucose, potassium, and protein-based analytes such as cholesterol.

What order do you draw blood cultures?

When drawing multiple blood samples from a line, always draw the blood culture first. Do not discard any blood from the line. Use this initial blood in the line, as this may be the best source if an organism is present.

Why is it important to mix a tube containing an anticoagulant immediately after drawing it?

Why is it important to mix a tube containing an anticoagulant immediately after drawing it? So that the blood doesn’t clot which will lead to inaccurate results. … Because leaching of substances from the cell layer into the serum may occur which changes the integrety of the serum, leading to inaccurate results.

Why is it important to allow the blood collection tubes to fill until the vacuum is exhausted?

fluid portion, called plasma. If the additive is a clot activator, the blood will clot and the specimen must be _?_ … quality can be compromised if the tube is underfilled, so it is important to allow additive tubes to fill with blood until the normal vacuum is exhausted.

What is the correct order of draw?

The correct order of draw follows: Blood culture tube or bottle. Sodium citrate tube (eg, blue closure) Serum tubes, including those with clot activator and gels (eg, red, red-speckled, gold closures)

Does order of draw matter?

Conclusion: Order of Draw Conclusions for order of draw are that evidence suggests that K EDTA contamination does not occur when you have a closed draw that is a vacutainer needle and vacutainer adaptors with plastic tubes and lyophilized K EDTA.

How do you remember the order of mnemonics?

The acronym is Boys Love Ravishing Girls Like Dieters Love Greek Yogurt!Boys – Blood Culture.Love – Light Blue.Ravishing – Red.Girls – Gold.Like – Light Green.Dieters – Dark green.Love – Lavender.Greek – Gray.More items…

Which blood tube is drawn first?

Standard order of draw: BLOOD CULTURES, royal blue, red, light blue, SST (Gold), green, tan, yellow, pink, pearl, lavender. If a coag tube (light blue) is the only tube or the first tube to be drawn, a 5 mL discard tube must be drawn first.

What is the order of draw for phlebotomist?

The recommended order of draw for plastic collection tubes is:First – blood culture bottle or tube (yellow or yellow-black top)Second – coagulation tube (light blue top). … Third – non-additive tube (red top)Last draw – additive tubes in this order: