Specimen collection

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The page below is a sample from the LabCE course Phlebotomy. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Specimen collection

  • To screen for gestational diabetes, collect blood after one hour.
  • For a standard glucose tolerance test collect blood and urine at 30 minute intervals, for two hours.
  • To confirm gestational diabetes, collect blood every hour for 3 hours.