1. Pre-Analytical Variables
Muhsen Alkurdi
Medical Affairs Consultant BD

2. The total testing cycle

4. Specimen Workflow

5. Specimen management process: causes errors

6. Factors contributing to increase the pre-analytical errors

7. Pre-analytical factors

8. Fixed pre-analytical factors

9. Variable pre-analytical factors

10. Specimen Identification and Labeling

11. Identification errors in Clinical Laboratory

12. Practices that reduce specimen Identification errors

13. Specimen labeling issues

14. Label misalignment can cause increased cost

15. Cost of specimen relabeling

16. Impact of collection and processing practices

17. Specimen quality: Syringe vs Evacuated tube

18. Specimen quality: IV catheter vs Evacuated tube

19. Correlation of hemolysis with the catheter dimension

20. Order of draw

21. Specimen mixing

22. Transport related causes

23. Reasons for rejection chemistry and hematology specimens

24. Hemolyzed specimens

25. Incomplete clotting

26. Insufficient quantity

27. Cost of poor specimen quality

28. Impact of pre-analytical variables on patient safety

29. Pre-analytical variables have to be managed