OAT Simplified
✦ For Functional Medicine Clinicians ✦

Read the OAT
like a pattern, not a puzzle.

Read the OAT
like a pattern,
not a puzzle.

The Organic Acids interpretation reference for clinicians serving pregnant clients, nursing mothers, and pediatric populations.

The OAT Simplified is the population-specific interpretation guide that takes the most overwhelming functional lab and turns it into a clinical decision framework. Mold, oxalates, mitochondrial function, neurotransmitter metabolism, dysbiosis, all interpreted through the lens of the clients standard training overlooks: kids, pregnant mothers, and nursing women.

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The Gap

The OAT is the most informative lab
and the hardest
to interpret quickly.

Seventy-plus markers across nine domains. Mitochondrial function, fatty acid metabolism, oxalate clearance, mold and yeast metabolites, neurotransmitter pathways, B-vitamin status, detox capacity. Every marker is clinically valuable. Every marker also takes time to interpret on its own, before you've even tied any of them together into a pattern.

And that's just for adults. The moment a kid or a pregnant client lands on your schedule, the work doubles. Reference ranges shift. Some interpretations don't apply at all. Some supplements are contraindicated. Another hour of research per client.

The OAT Simplified collapses that complexity into a usable clinical framework. Organized by clinical decision point, with population-specific modifications built in. So you can read the OAT as the pattern it is, not the puzzle it appears to be.

What's Inside

Everything you need to interpret with confidence.

Six structured sections, written by a clinician for clinicians. Skip the textbook deep dives. Get the population-specific clinical decision logic that actually changes your OAT protocol.

Pregnancy Considerations

How pregnancy alters OAT markers, what's safe to interpret as out of range and what's a normal physiologic shift, and pregnancy-safe protocols for mold, oxalate, and mitochondrial findings.

Breastfeeding Considerations

Lactation-specific OAT interpretation. Which antifungals, binders, and detox supports transfer into breast milk, and how to address mold or yeast overgrowth without compromising the nursing relationship.

Fertility Considerations

The OAT markers that warrant attention before conception. Mitochondrial function, oxidative stress, mold burden, and the methylation cascade as foundational fertility work.

Pediatric Considerations

Pediatric OAT reference ranges, age-appropriate dosing for antifungals and binders, and the population-specific clinical patterns for mold-exposed kids, PANS/PANDAS, and developmental concerns.

Supplement Guide

A reference list of clinician-grade supplements organized by OAT finding: antifungals, biofilm disruptors, mitochondrial support, oxalate clearance, methylation cofactors. With population modifications for each.

Patterns of Interpretation

Clinical pattern recognition tied to common presentations: mold-driven inflammation, mitochondrial dysfunction, oxalate overload, gut-brain axis disruption, candida overgrowth, and dysbiosis.

Built For You If

You're already running OATs.
You want to read them faster.

This guide is built for clinicians who run OATs regularly and want to stop wading through seventy-plus markers every time, especially when the client is a pregnant woman or a kid.

  • You're an ND, NTP, RD, nutritionist, or functional medicine clinician who already uses the OAT in practice.
  • You see perinatal or pediatric clients regularly and want a single reference instead of a stack of bookmarks.
  • You want to cut your OAT review time without compromising clinical accuracy or population safety.
  • You want to confidently build protocols for pregnant, breastfeeding, fertility-focused, and pediatric clients without second-guessing antifungal or binder contraindications.
  • You want to recognize clinical patterns faster, so you can connect OAT findings to the mold, fatigue, mood, or developmental concern the client actually came in for.
Nina-Marie Rueda, ND
Nina-Marie Rueda, ND Founder · Clinician · Builder
A note from the founder

The OAT is brilliant.
It's also overwhelming.

I run a perinatal and pediatric functional medicine practice. The OAT is one of the most clinically rich labs I run, and also the one I used to spend the longest interpreting. Seventy markers, multiple competing frameworks, and then a layer of population-specific modifications on top.

For years, every time an OAT landed on my desk for a pregnant client or a child, I'd rebuild the clinical logic from scratch. Pull out the mold protocol notes, cross-reference pediatric dosing, check which antifungals I avoid in pregnancy, re-derive whether a marker shift was clinically significant or just a normal physiologic adaptation.

This guide is what I built to stop doing that. It's the OAT reference my team uses every day. Population-aware, organized by clinical decision point, with the patterns and protocols I actually use in practice. The work that used to take me an hour per client now takes about fifteen minutes.

If you're already running OATs and you've felt this exact friction, this guide is for you.

The OAT was never the problem. The way we have to interpret it was. This guide fixes that.
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Stop re-researching.
Start interpreting.

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© Nina-Marie Rueda, ND · doctorninamarie.com