The following statements are all false. Circle the one or two words that make the statement faise and write the correct word(s) that would make the statement true in the space provided. 1. Microhematocrit tubes are often referred to as “bullets” because of their size and shape. 2. Warming a capillary puncture site can increase the blood flow up to 10 times. 3. Capillary puncture is sometimes recommended when available veins are fragile or must be saved for other procedures such as a glucose tolerance test. 4. Except for POCT methods, blood specimens for glucose tests cannot be collected by capillary puncture. 5. Microtubes for chemistry specimens are collected first in the order of draw for capillary puncture. 6. The CLSt-recommended site for capillary puncture on adults and children older than 1 year is the palmar surface of the distal or end segment of the middle or ring finger of the dominant hand. 7. The safest area for heel puncture is the medial or lateral palmar surface of the beel. 8. Neonatal bilirubin specimens must be kept cool during transportation and handling. 9. Phenylketonuria is a temporarily acquired disorder. 10. Blood spot circles for newborn screening tests are filled by applying a large drop of free-flowing blood to each side of the filter paper 11. The recommended antiseptic for capillary specimen collection is povidone-iodine 12. “Calcaneus” is the medical term for finger bone. 13. The capillary bed in the skin of a full term newborn is richest in capillary loops below 1 mm deep. 14. Do not squeeze the site while collecting a capillary specimen as hemoconcentration can result. 15. Underfilling a microtube can result in microclots in the specimen.
The Correct Answer and Explanation is :
Here are the corrections for the false statements along with explanations:
- Microhematocrit tubes are often referred to as “bullets” because of their size and shape.
- Incorrect word(s): “bullets”
- Correct word(s): “capillaries”
- Explanation: Microhematocrit tubes are commonly called “capillaries” due to their thin, tube-like structure, not “bullets.”
- Warming a capillary puncture site can increase the blood flow up to 10 times.
- Incorrect word(s): “10 times”
- Correct word(s): “7 times”
- Explanation: Warming the site increases blood flow, but typically by about 7 times, not 10.
- Capillary puncture is sometimes recommended when available veins are fragile or must be saved for other procedures such as a glucose tolerance test.
- Correct as is.
- Except for POCT methods, blood specimens for glucose tests cannot be collected by capillary puncture.
- Incorrect word(s): “except for POCT methods”
- Correct word(s): “POCT methods”
- Explanation: Point-of-care testing (POCT) methods allow glucose tests to be done using capillary specimens. The statement is false because capillary puncture is valid for glucose testing, especially with POCT.
- Microtubes for chemistry specimens are collected first in the order of draw for capillary puncture.
- Incorrect word(s): “first”
- Correct word(s): “last”
- Explanation: Microtubes for chemistry specimens are typically collected last in the order of draw for capillary puncture.
- The CLSt-recommended site for capillary puncture on adults and children older than 1 year is the palmar surface of the distal or end segment of the middle or ring finger of the dominant hand.
- Correct as is.
- The safest area for heel puncture is the medial or lateral palmar surface of the heel.
- Incorrect word(s): “palmar”
- Correct word(s): “plantar”
- Explanation: The safest area for heel puncture is the medial or lateral plantar surface, not palmar.
- Neonatal bilirubin specimens must be kept cool during transportation and handling.
- Correct as is.
- Phenylketonuria is a temporarily acquired disorder.
- Incorrect word(s): “temporarily acquired”
- Correct word(s): “genetic”
- Explanation: Phenylketonuria (PKU) is a genetic disorder, not a temporarily acquired one.
- Blood spot circles for newborn screening tests are filled by applying a large drop of free-flowing blood to each side of the filter paper.
- Incorrect word(s): “each side”
- Correct word(s): “one side”
- Explanation: Blood spots are typically applied to one side of the filter paper, not both sides.
- The recommended antiseptic for capillary specimen collection is povidone-iodine.
- Incorrect word(s): “povidone-iodine”
- Correct word(s): “alcohol”
- Explanation: The recommended antiseptic for capillary specimen collection is alcohol, not povidone-iodine, as it can interfere with test results.
- “Calcaneus” is the medical term for finger bone.
- Incorrect word(s): “finger bone”
- Correct word(s): “heel bone”
- Explanation: The calcaneus is the medical term for the heel bone, not the finger bone.
- The capillary bed in the skin of a full-term newborn is richest in capillary loops below 1 mm deep.
- Correct as is.
- Do not squeeze the site while collecting a capillary specimen as hemoconcentration can result.
- Correct as is.
- Underfilling a microtube can result in microclots in the specimen.
- Correct as is.
These corrections highlight key aspects of specimen collection, emphasizing accuracy in technique and understanding the physiological differences that influence blood collection practices. Proper procedures are vital for ensuring the integrity of samples and the accuracy of test results.