A patient is to have a venipuncture to obtain a blood sample to check ammonia levels. What should the nurse do when given this information?
a. Use pre-warmed test tubes.
b. Keep the specimen out of the light.
c. Avoid use of a tourniquet during the procedure.
d. Place the samples on ice before sending them to the lab.
D
Some specimens have special collection requirements before or after specimen collection. For ammonia levels, tubes must be placed on ice for delivery to the laboratory. For cryoglobulin levels, use pre-warmed test tubes. For vitamin levels, avoid exposure of the test tube to light. For lactic acid levels, do not use a tourniquet.
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