Question

When should a capillary puncture be used for withdrawal of blood? (Select all that apply.)

Options:
a) Routine blood tests
b) Arterial blood gas analysis
c) Blood glucose monitoring
d) Coagulation studies

Answer 1

A capillary puncture is appropriate for routine blood tests and blood glucose monitoring because these require only a small amount of blood.

Step-by-step explanation:

A capillary puncture is used to withdraw blood for various medical tests. This blood collection method is typically utilized when only a small quantity of blood is needed. According to the choices provided, a capillary puncture should be used for:

• Routine blood tests (a)
• Blood glucose monitoring (c)

For routine blood tests, such as those determining lipid levels or glucose levels in plasma, and for blood glucose monitoring, capillary puncture is ideal because these tests require only a small amount of blood. However, capillary puncture is not appropriate for arterial blood gas analysis (b) or coagulation studies (d) since these require blood from an artery and blood in larger quantities, respectively.