Common Test-Ordering Errors
Part 5: Overordered Tests

Testing at Mayo Medical Laboratories

August 2010

Here at Mayo Medical Laboratories we receive over 800,000 test orders each month. While by our estimation most of the orders we receive are appropriate orders, we do experience some recurring test-ordering problems. In this presentation, I will describe the most common problems that we see. I will also describe our efforts to decrease these problems and recommend ways that you too can help reduce these errors. Together, by decreasing inappropriate test orders, we can improve patient care and reduce costs.

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Testing at Mayo Medical Laboratories

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Jump to section:

• Introduction
• Testing at Mayo Medical Laboratories
• Common MML Test-Ordering Errors
• Overordered Tests
• Thiamin (Vitamin B1)
• Thiamin (Vitamin B1)
• Folate—Serum and RBC
• Diagnostic Algorithm for Macrocytic Anemia
• Simplified Versions of Vitamin-Dependent Pathways
• Lead Toxicity
• Heme Synthesis*
• Laboratory Assessment of Lead Toxicity
• Conclusion
• Questions?