Barbell Medicine Podcast Episode #346: Direct To Consumer Lab Testing
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May 2, 2025 Dive into the intriguing world of direct-to-consumer lab testing! The hosts highlight its rapid growth and the convenience it offers while warning about potential risks and the need for accurate interpretation. They discuss the distinctions between essential and unnecessary tests and share personal stories. Understanding kidney and liver function tests is crucial, as misinterpretations can lead to anxiety. Milestone screenings at age 40 are particularly important, and the conversation encourages a thoughtful approach to health monitoring for better outcomes.
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Risks of Direct Lab Testing
- Direct-to-consumer lab testing is growing rapidly but often lacks proper context for result interpretation.
- Lab error rates can be higher in non-accredited labs, posing risks for misdiagnosis and anxiety.
Interpreting Kidney Function Tests
- Creatinine levels can be misleadingly high in muscular individuals and those taking creatine supplements.
- Cystatin C testing helps distinguish true kidney dysfunction from elevated creatinine due to muscle mass or supplementation.
Interpret Elevated BUN Carefully
- Elevated BUN often reflects high-protein diets rather than kidney dysfunction.
- Don’t assume dehydration or kidney issues without considering diet and correlating other kidney function tests like cystatin C.