Capillary puncture is primarily used for which types of tests?

Capillary puncture is primarily used for which types of tests?

• A. Lipid panel and TSH
• B. Glucose testing, hemoglobin, hematocrit, rapid testing, and neonatal screening
• C. Capillary puncture is not used for any laboratory tests
• D. Hemoglobin only

Answer: (B)

Capillary puncture is ideal when only a small amount of blood is needed and rapid results are important. It’s routinely used for glucose testing at the point of care, for hemoglobin and hematocrit measurements with handheld devices, for rapid tests that can be performed on a tiny sample, and for neonatal screening that uses dried blood spots from heel or finger sticks. Tests like lipid panels and TSH typically require larger, well-mixed venous samples to ensure accuracy, so they aren’t primarily performed with capillary puncture. In short, capillary puncture is most useful for small-volume, quick-screening scenarios and newborn screening.

Capillary puncture is ideal when only a small amount of blood is needed and rapid results are important. It’s routinely used for glucose testing at the point of care, for hemoglobin and hematocrit measurements with handheld devices, for rapid tests that can be performed on a tiny sample, and for neonatal screening that uses dried blood spots from heel or finger sticks. Tests like lipid panels and TSH typically require larger, well-mixed venous samples to ensure accuracy, so they aren’t primarily performed with capillary puncture. In short, capillary puncture is most useful for small-volume, quick-screening scenarios and newborn screening.