Placing blood gas samples in an ice bath serves to do which of the following?
a. Keep the specimen cold.
b. Slow down in vitro metabolism.
c. Allow the red blood cells to remain intact.
d. Prevent the white blood cells from de-stroying the red blood cells.
ANS: B
Chilling the blood specimen to below 5° C by placing the syringe in ice water can reduce the metabolic rate of the white blood cells. The ice bath does keep the specimen cold, but the pur-pose of keeping it cold is to reduce the in vitro metabolism rate.
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Type III stone that is used for lab procedures is most commonly is called which mix?
orthodontic model stone laboratory stone high-strength die stone impression plaster