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The page below is a sample from the LabCE course Minimizing Pre-Analytical Variability During Venipuncture and Urine Sample Collection Processes. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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The Testing Process

There are three phases of laboratory testing:
  1. Pre-analytical (pre-testing phase)
  2. Analytical (testing phase)
  3. Post-analytical (post-testing or reporting phase)
There are numerous processes that occur within each of the three phases of testing. Some examples include:

Pre-AnalyticalAnalyticalPost-Analytical
  • Positive identification
  • Patient preparation
  • Sample collection
  • Sample integrity
  • Standardization
  • Operator competence
  • Analysis
  • Quality assurance
  • Result printing
  • Interfacing
  • Reporting
  • Communicating