I recently took the plunge and tested my blood for microplastics using Bryan Johnson’s Blueprint test. The results came back: 17 particles detected, all under 10 microns in size. My initial reaction? Skepticism about what this actually means.
After digging deep into the science, I’ve concluded that PFAS testing is genuinely actionable while microplastics testing is mostly an expensive data point—at least for now. Here’s what I learned, and how you can get tested yourself for less.
My Blueprint Microplastics Results: The Hard Truth
My Test Results (January 8, 2025)
| Total Particles | 17 | | Size Distribution | 100% under 10µm (smallest, most concerning size) | | Concentration | 170 particles/ml | | Population Percentile | Better than 44%, worse than 26% |
What This Actually Tells Me
Virtually nothing actionable. Here’s why:
- No clinical thresholds exist. Unlike PFAS, where ≥20 ng/mL triggers follow-up care, there’s no established “safe” or “dangerous” level of microplastics.
- No polymer identification. The test doesn’t tell me what kind of plastic. Without knowing the type, I can’t identify my exposure source.
- Self-selected comparison population. I’m being compared to people who paid $199 for a Bryan Johnson longevity test—biohackers, not a representative sample.
- High day-to-day variability. Blood microplastics fluctuate based on recent meals, environment, and hydration.
The Honest Assessment
I paid $199 for a number without clinical meaning, compared to an irrelevant population, with no actionable source identification. It’s a curiosity purchase, not a health optimization tool.
The Science: What’s Actually Proven to Harm Humans
PFAS (“Forever Chemicals”) — Strong Evidence Base
The National Academies of Sciences established strength-of-evidence classifications in 2022:
| Evidence Level | Health Effects |
|---|---|
| SUFFICIENT EVIDENCE | Decreased vaccine response • Increased cholesterol • Low birth weight • Kidney cancer (WHO classifies PFOA as carcinogenic) |
| LIMITED/SUGGESTIVE | Testicular cancer • Breast cancer • Thyroid disease • Liver damage • Pregnancy-induced hypertension |
Key stat: 98% of Americans have measurable PFAS in their blood.
What You Can Do Right Now
PFAS are in your blood. The question is what you do with that information. Detox protocols exist — sauna, cholestyramine, activated charcoal, dietary shifts. But the deeper question is systemic: why are we still allowing these compounds to be manufactured at all?
Related reading: The Psychedelic Readiness Index — because healing your body is only half the work · Iboga vs. Ibogaine — the medicine that resets the nervous system · The Extractive Capitalism of Psychedelics — the same forces poisoning your water are now monetizing your healing
Your ImpactSoul Score measures where you are in your evolution — and whether you're ready to move from awareness to action. If learning your PFAS levels changed something in you, that's the signal.