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Why are EDTA specimens obtained before other specimens when collected by skin puncture?
EDTA specimens are obtained first to prevent contamination of the blood with elements released during the skin puncture process, such as potassium and glucose, which could affect the accuracy of subsequent tests. EDTA also helps to preserve the integrity of the blood cells for hematologic testing.
Why are EDTA specimens obtained before other specimens when collecting by skin puncture?
to minimize effects of platelet clumping
Skin puncture blood most closely resembles what kind of fluid?
Skin puncture blood most closely resembles venous blood, which is the blood collected from veins for laboratory tests. However, it may contain some interstitial fluid due to the puncture of capillaries in the skin during the collection process.
What preparation is necessary before a hemoglobin test?
No special preparation is required other than cleaning and disinfecting the skin at the puncture site. Blood is collected in a tube by venipuncture.
Hemolysis in skip puncture specimens may be caused by?
squeezing the site too hard
What test specimen is collected first by capillary puncture?
cbc
How much psi does it take to puncture the skin?
It typically takes about 14 psi (pounds per square inch) to puncture human skin. However, the exact amount can vary depending on factors such as the thickness of the skin, the angle of the object, and the force behind the puncture.
How did Alfred Russell Wallace fund his voyages?
he sold many of the specimens he collected
Do tattoos puncture veins?
No, a tattoo needle doesn't penetrate the skin deeply enough to puncture a vein.
What is Procedure to skin prior to routine puncture?
Clean the skin if practical and necessary. Then, applicaiton of disinfectant if the skin is not punctured (alcohol) or antiseptic if the skin is punctured (betadyne, hydrogen peroxide). With puncture wounds, plan on a tetanus update, if necessary.
Why are most hair specimens collected at crimes scenes are not good souces of DNA?
dudi
Can a rat snake puncture your skin?
It depends how big the snake is. Young ones' teeth are tiny, and are unlikely to puncture a persons skin. An adult, however, has teeth that are 3-4mm long, and are capable of breaking the skin.
