Describe the difference between capillary puncture (fingerstick) and venipuncture for blood glucose testing.

Describe the difference between capillary puncture (fingerstick) and venipuncture for blood glucose testing.

• A. Capillary fingerstick provides rapid point-of-care glucose; venipuncture provides larger sample for lab measurement and confirmation
• B. Capillary fingerstick provides larger sample; venipuncture provides rapid point-of-care glucose
• C. Capillary fingerstick uses arterial blood; venipuncture uses venous blood
• D. Capillary fingerstick is not used for glucose testing; venipuncture is used

Answer: (A)

The difference being tested is how these methods balance speed and sample size for glucose testing. Capillary fingerstick gives a quick, small blood sample at the bedside, so results from a point-of-care device are available right away for fast monitoring. Venipuncture draws a larger volume of blood that goes to the lab, where tests are more precise and can be used for confirmation or additional analyses. The other ideas don’t fit: fingerstick doesn’t provide a larger sample, and venipuncture isn’t the only way to measure glucose but is the method used when a larger, lab-verified sample is needed.

The difference being tested is how these methods balance speed and sample size for glucose testing. Capillary fingerstick gives a quick, small blood sample at the bedside, so results from a point-of-care device are available right away for fast monitoring. Venipuncture draws a larger volume of blood that goes to the lab, where tests are more precise and can be used for confirmation or additional analyses. The other ideas don’t fit: fingerstick doesn’t provide a larger sample, and venipuncture isn’t the only way to measure glucose but is the method used when a larger, lab-verified sample is needed.