? asked in Science & MathematicsMedicine · 4 weeks ago

Is it true you can only get blood with a needle from veins and arteries?

6 Answers

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  • Frank
    Lv 5
    4 weeks ago

    Well, if you like, I could punch you in the nose. Then all this blood will rush out and you can catch it in a tiny cup and present that as a sample for testing if that's what you're looking for.

  • 4 weeks ago

    In quantity, yes, small samples, capillaries in the skin with a needle puncture is sufficient. IE: diabetic testing.

  • Zirp
    Lv 7
    4 weeks ago

    no, capillaries can bleed too, but because of the size it would take a very long time to get an amount that you can use. Getting a drop from a fingertip is enough to determine sugar-content though. Diabetes-patients use that

  • Anonymous
    4 weeks ago

    Yep, so if you're afraid of needles, time to get over it. Just turn your head away like I do when they draw blood. Usually it doesn't hurt much at all and is quick.

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  • Pearl
    Lv 7
    4 weeks ago

    that sounds like its true

  • Anonymous
    4 weeks ago

    And capillaries

    • Diane A
      Lv 7
      4 weeks agoReport

      No needle is small enough to get into a capillary. A cap draw is via a lancet, not a needle, and not for many tests

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