Articles
Gut Health, Lab Testing and Practice Insights from RSN Institute

My Client's Labs Are Normal, But They Still Feel Terrible. What Is Missing?

My Client's Labs Are Normal, But They Still Feel Terrible. What Is Missing?

Rachel Scheer
Published on: 15/07/2026

Normal labs but persistent symptoms? Learn why standard testing misses dysfunction, which markers get overlooked, and how functional practitioners fill the gap.

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Do Clients Need Functional Testing, or Can They Just Guess With Supplements?

Do Clients Need Functional Testing, or Can They Just Guess With Supplements?

Rachel Scheer
Published on: 15/07/2026

Supplements without testing is guessing. Learn why functional testing turns symptom-chasing into clinical reasoning, with B12 as a working example.

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