Blood Sample Collection Procedures

This video tutorial explains the importance of drawing blood samples in a specific order to prevent contamination and ensure accurate test results. It covers the different types of blood tubes, their preservatives, and the correct sequence for drawing samples. The tutorial emphasizes the need for nursing judgment and consulting with labs for specific test requirements. It concludes with a recap of key points and advice for avoiding contamination.

Why is it crucial to draw blood samples in a specific order?

• To use fewer syringes

• To prevent contamination and ensure accurate results

• To make the process more comfortable for the patient

• To save time during the process

What is the main purpose of the preservatives in blood tubes?

• To make the blood smell better

• To prevent the blood from clotting or affecting other tests

• To increase the volume of the blood sample

• To change the color of the blood

Which tube is used for coagulation studies?

• Gray top tube

• Lavender top tube

• Light blue top tube

• Green top tube

What is the main additive in the lavender top tube?

• Heparin

• EDTA

• Potassium oxalate

• Sodium citrate

Which blood tube is typically used first when drawing samples?

• Gray top tube

• Lavender top tube

• Light blue top tube

• Blood culture jars

What is the recommended order for drawing blood samples?

• Red or green, blood culture, gray, lavender, light blue

• Gray, lavender, red or green, light blue, blood culture

• Lavender, gray, blood culture, red or green, light blue

• Blood culture, light blue, red or green, lavender, gray

What is a potential risk of not following the correct order of drawing blood samples?

• The tubes may break

• The blood may change color

• The test results may be inaccurate

• The patient may feel dizzy

What should you do if you are unsure about which tube to use for a test?

• Guess based on the color of the tube

• Consult the lab for guidance

• Use the tube with the most preservatives

• Skip the test altogether

What should you consider if a test is particularly expensive or sensitive?

• Use a larger syringe

• Draw a separate sample to avoid contamination

• Skip the test to save costs

• Mix the samples to save time

What is the final step in ensuring the accuracy of blood test results?

• Using the largest available tube

• Consulting the lab for any uncertainties

• Drawing all samples from the same tube

• Skipping unnecessary tests