Order of Draw

What is the correct order of draw for phlebotomy tubes immediately following blood culture bottles?

• Light blue, red, SST, lithium heparin, potassium EDTA, gray top

• Red, light blue, SST, potassium EDTA, lithium heparin, gray top

• SST, light blue, red, lithium heparin, potassium EDTA, gray top

• Light blue, SST, red, potassium EDTA, lithium heparin, gray top

Why are blood culture bottles used when a patient is suspected of having septicemia?

• To prevent blood clotting and preserve red blood cells.

• To grow bacteria present in the blood for identification and treatment.

• To measure the patient's blood glucose levels accurately.

• To separate plasma from serum for various chemical tests.

What is the primary function of the anticoagulant in blood culture bottles?

• To enhance the patient's immune response against bacteria.

• To prevent bacterial growth by altering blood pH.

• To pull out calcium and reduce complement activity, allowing bacteria to grow.

• To rapidly clot the blood for quick bacterial isolation.

What is the primary purpose of the sodium citrate anticoagulant in blue top tubes?

• To activate the clotting cascade for serum collection.

• To preserve clotting cascade factors by pulling out calcium.

• To prevent bacterial contamination during blood collection.

• To stabilize blood glucose levels for accurate measurement.

What is the primary function of the gel found in serum separator tubes (SSTs)?

• To prevent blood from clotting.

• To enhance the clotting process.

• To separate blood cells from the serum.

• To preserve specific blood components for long-term storage.

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For which type of test is a Lithium Heparin tube commonly used, especially if the sample needs to be kept on ice?

• Complete Blood Count (CBC)

• Blood cultures

• Lactate levels

• Coagulation studies

Which type of blood test commonly utilizes Potassium EDTA tubes?

• Serum chemistry panels

• Blood banking and hematology

• Blood glucose monitoring

• Blood alcohol content

What critical issue can arise if a Potassium EDTA tube is drawn before chemistry tubes?

• The blood sample will clot prematurely.

• The sample will become hemolyzed, making it unusable.

• Falsely high potassium and falsely low calcium results in chemistry tests.

• Inaccurate blood typing results due to anticoagulant interference.

Why is it important to mix blood collection tubes immediately after drawing a specimen?

• To prevent the blood from clotting too quickly.

• To ensure a complete and equal distribution of additives throughout the blood.

• To separate the plasma from the cellular components.

• To activate the clotting factors for serum separation.