Capillary Samples

Question 1

What is a capillary sample?

Answer 1

A capillary sample is a blood specimen obtained from capillary vessels, typically via a fingerstick or heelstick.

Question 2

True or False: Capillary samples are suitable for all types of blood tests.

Answer 2

False

Question 3

What are common sites for capillary collection in adults?

Answer 3

The fingertips are the common sites for capillary blood collection in adults.

Question 4

Fill in the blank: The preferred site for capillary blood collection in infants is the _______.

Answer 4

heel

Question 5

Which of the following is NOT a reason for choosing capillary sampling? A) Ease of collection B) High volume needed C) Minimally invasive

Answer 5

B) High volume needed

Question 6

What is the typical order of draw for capillary samples?

Answer 6

The order of draw is typically: EDTA tubes, non-additive tubes, and then additive tubes.

Question 7

True or False: Capillary blood is a mixture of arterial, venous, and interstitial fluid.

Answer 7

True

Question 8

What is the maximum depth for a heelstick in infants?

Answer 8

The maximum depth for a heelstick is 2.0 mm.

Question 9

What equipment is commonly used for capillary blood collection?

Answer 9

A lancet is commonly used for capillary blood collection.

Question 10

Fill in the blank: The _______ technique is used to warm the site before capillary blood collection.

Answer 10

warming

Question 11

What is a potential complication of capillary sampling?

Answer 11

Potential complications include infection, hematoma, and inadequate sample volume.

Question 12

What is the recommended angle for puncturing the skin during capillary blood collection?

Answer 12

The recommended angle is 45 degrees.

Question 13

True or False: Alcohol should be used to clean the site before capillary sampling.

Answer 13

True

Question 14

What is the primary advantage of capillary sampling over venipuncture?

Answer 14

The primary advantage is that it is less invasive and easier to perform.

Question 15

What type of blood test is typically NOT performed on capillary samples?

Answer 15

Coagulation studies are typically NOT performed on capillary samples.

Question 16

Multiple choice: Which of the following is the best practice for obtaining a capillary sample? A) Squeeze the finger hard B) Wipe away the first drop of blood C) Use a dull lancet

Answer 16

B) Wipe away the first drop of blood

Question 17

What is the purpose of wiping away the first drop of blood during capillary collection?

Answer 17

To remove tissue fluid contamination.

Question 18

Fill in the blank: Capillary blood samples should be collected in _______ tubes when necessary.

Answer 18

microcollection

Question 19

True or False: Capillary blood samples can be used for blood gas analysis.

Answer 19

False

Question 20

What is the primary reason for using capillary sampling in pediatric patients?

Answer 20

To minimize discomfort and reduce the risk of complications associated with venipuncture.

Question 21

What should be done if the capillary sample is insufficient?

Answer 21

A new site may need to be selected for collection.

Question 22

What is the recommended method to enhance blood flow to the collection site?

Answer 22

Gently rubbing the area or applying heat.

Question 23

True or False: Capillary samples can be affected by the patient’s hydration status.

Answer 23

True

Question 24

What is the role of the phlebotomist in capillary sampling?

Answer 24

The phlebotomist is responsible for safely and effectively collecting and handling capillary blood samples.