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. 2009 May 21:573–642. doi: 10.1016/B0-72-160138-3/50006-0

TABLE 5-12.

Gray-Topped Tube

Additive Sodium fluoride and potassium oxalate
Effect Antiglycolytic agent that serves to preserve glucose for up to 5 days
Tests Glucose and 12- hour glucose curves; NOTE: Inadequate volume may result in sample hemolysis