The “Order of Draw” is designed to eliminate the possibility of cross contamination that may result in erroneous results. It is based on CLSI Procedures for Collection of Diagnostic Blood Specimens by Venipuncture; Approved Standard Sixth Edition, October 2007.

What is the correct blood draw order?

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). If just a routine coagulation assay is the only test ordered, then a single light blue top tube may be drawn.

What is the CLSI recommendation for needle angle and vein selection?

Question 2: What is the maximum angle at which a needle should be inserted into the vein? According to CLSI and most textbooks, the proper angle of needle insertion is 30 degrees or less. If a patient is injured and it can be shown the angle of insertion was excessive, the facility may be liable for the injury.

Which blood culture bottle do you draw first?

The blue (aerobic) blood culture bottle should be filled first, then the purple (anaerobic) bottle as the butterfly tubing may contain air. Air entering the purple bottle will impede the growth of anaerobic organisms.

Which labs should be drawn first?

Blood Culture Bottles are ALWAYS drawn prior to other labs to reduce contamination. . Tube MUST be filled 100% – No exceptions! NOTE: All tubes sterile. Standard order of draw: BLOOD CULTURES, royal blue, red, light blue, SST (Gold), green, tan, yellow, pink, pearl, lavender.

Why is order of draw important?

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.

Which of the following is the CLSI acceptable order of tube draw?

The order of draw is based on CLSI Procedures and Devices for the Collection of Capillary Blood Specimens; Approved Standard – Sixth Edition, September 2008. This standard recommends that EDTA tubes be drawn first to ensure good quality specimen, followed by other additive tubes and finally, serum specimen tubes.

Why are blood cultures always drawn first?

Shaking the tube vigorously may cause hemolysis of the blood (separating of red blood cells). 1. Blood Culture Bottles – Used for bacterial and fungal cultures. Must be drawn first to reduce the potential hazard of bacterial, fungal, quantitative, CMV, and/or any other specimen contamination.

Why is aerobic drawn first?

The aerobic bottle should be inoculated first for several reasons, including the fact that air from the tubing is pulled into the bottle compromising an anaerobic environment and if flow of blood is interrupted, most of the organisms that cause septicemia (aerobic) will be recovered.

Why are there two sets of blood cultures?

Why are two specimens required from two separate sites? To mitigate this perceived inevitability, 2 cultures are drawn for each collection from two separate insertion sites. This helps to distinguish true bloodstream infection (in which both specimens will be positive with the same organism) vs.

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What is CLSI in phlebotomy?

Clinical and Laboratory Standards Institute (CLSI). Essential Elements of a Phlebotomy Training Program.

What does CLSI say about needle relocation?

The Clinical and Laboratory Standards Institute’s (CLSI) venipuncture standard (GP41-A7) clearly states that a calculated needle relocation is acceptable (to a limited extent in the area of the basilic vein), but only if the exact location of the vein is known.

What is the CLSI recommended procedure for cleaning a venipuncture site?

The CLSI standards recommend cleansing the site with friction using a clean gauze pad with 70% isopropyl alcohol solution or a commercially prepared alcohol pad.

Does it matter what order you draw labs?

Contamination of serum samples with K EDTA will occur routinely if order of draw is not followed. … Modern lab equipment can tell the difference between K from the EDTA tube and K from the patient, so order of draw is no longer important.

What does order of draw mean?

(ōr’dĕr draw) Recommended sequence in which blood specimens should be drawn so as to minimize interference in testing caused by carryover of additives in tubes.

What is the full form of CLSI?

The Clinical and Laboratory Standards Institute (CLSI) is a non-profit US-based organization that supports the development of scientific and clinical standards and guidelines.

Why is the order of draw important in phlebotomy?

Blood samples must be drawn by phlebotomists in a specific order to avoid cross-contamination of the sample by additives found in different collection tubes. Phlebotomy order of draw is the same for specimens collected by syringe, tube holder, or into tubes preevacuated at the time of collection.

When performing capillary draws what is the correct order of draw quizlet?

The correct order of draw would be: two light blue top tubes (one waste and one for PT which is a coagulation test), green top tube (for the Chem 7), and the lavender top tube (for the CBC).

How can I remember my phlebotomy tubes?

This knowledge is what separates a good phlebotomist from an amazing phlebotomist. The best way to always remember tubes is by additives. This way, no matter how many times a hospital may change the color of the tubes, the additives will always remain the same.

Why do you draw a blue top first?

This is all done at bedside at time of draw. draws – see below) to help prevent tissue fluid contamination first draw a small amount of blood into a waste tube (plain/no additive tube – white or red top) before drawing blue top tube. Allow vacuum to fill tube until blood stops flowing.

What are the 3 most common veins used in phlebotomy?

The most site for venipuncture is the antecubital fossa located in the anterior elbow at the fold. This area houses three veins: the cephalic, median cubital, and basilic veins (Figure 1).

Can you draw blood cultures from a PICC line?

Collect one set of blood cultures from a Peripheral Stab AND from EACH indwelling line (arterial, central line, PICC). Each set of blood cultures consists of one anaerobic and one aerobic bottle. Cultures from all sites should be drawn within 15 minutes.

Which of the following may cause hematoma formation?

The most common cause of a hematoma is injury or trauma to blood vessels. This can happen as a result of any damage to blood vessels that can disrupt the integrity of the blood vessel wall. Even minimal damage to a small blood vessel can result in a hematoma.

When drawing a PT test you must deliver?

Must be drawn swiftly with a clean venipuncture (no hematoma). Time drawn must be indicated on requisition. A PT can be performed on a sample if it is kept unopened and uncentrifuged at room temperature to be delivered to lab within 12 hours.

Should you draw blood cultures from a central line?

a. Peripherally drawn blood cultures are the optimal specimen. Blood cultures obtained via central venous catheters are more likely to be contaminated by organisms residing in the device itself or device components (i.e., tubing, end caps).

How are blood cultures drawn?

A nurse or a phlebotomist (a medical technician who takes blood) will clean your skin and insert a thin needle into your vein to draw your blood. The process will be repeated using another vein to get the most accurate results. In a lab, your blood samples will get mixed with a special material called a culture.

How many blood cultures should be drawn?

At least two (2) sets of blood cultures should be obtained (each set includes one (1) aerobic and one (1) anaerobic bottle). Each set of blood cultures are to be drawn from two separate venipuncture sites at approximately 15 minutes apart.

Why would a blood culture be ordered?

Why It Is Done A blood culture is done to: Find a bacterial infection that has spread into the blood, such as meningitis, osteomyelitis, pneumonia, a kidney infection, or sepsis. A culture can also show what type of bacteria is causing the infection. Find a fungal infection, such as yeast, in the blood.

Does positive blood cultures mean sepsis?

The diagnosis at admission most frequently associated with positive results (69%) was sepsis/septic shock (Table 1; about 50% of patients with sepsis/septic shock had positive blood cultures).

Why would blood cultures be drawn if the patient spikes a fever?

Bloodstream infections are an important cause of morbidity and mortality. Physician orders for blood cultures often specify that blood specimens be collected at or around the time of a temperature elevation, presumably as a means of enhancing the likelihood of detecting significant bacteremia.

What does CLSI do?

CLSI is a community committed to better medical laboratory test results. Our mission is simple: to develop clinical and laboratory practices and promote their use worldwide. Our vision: setting the standard in laboratory medicine for a healthier world, explains the why.