Bryan Johnson Blueprint vs Midori Spring
A fair, data-driven comparison. All safety data carries source, lab, and date.
Bryan Johnson Blueprint
Midori Spring
Origin
Japan
Japan
Grade
ceremonial
ceremonial
Price/g
$1.10
$0.60
Transparency tier
Tier 1
Tier 2
Publishes numeric COA
COA published
Organic cert
unspecified
USDA
Lead (ppb)
98 ppb — Per Blueprint self-published COA, December 2024 (2024-12)
0.135 ppm — Eurofins Japan, per Midori Spring published results (2025-01)
| Feature | Bryan Johnson Blueprint | Midori Spring |
|---|---|---|
| Origin | Japan | Japan |
| Grade | ceremonial | ceremonial |
| Price/g | $1.10 | $0.60 |
| Transparency tier | Tier 1 | Tier 2 |
| Publishes numeric COA | ||
| COA published | ||
| Organic cert | unspecified | USDA |
| Lead (ppb) | 98 ppb — Per Blueprint self-published COA, December 2024 (2024-12) | 0.135 ppm — Eurofins Japan, per Midori Spring published results (2025-01) |
Verdict
Both Bryan Johnson Blueprint and Midori Spring are legitimate matcha options. The key differentiator is transparency: Bryan Johnson Blueprint publishes a full COA with specific heavy metal values from a named, accredited lab.
All data in this comparison is sourced from publicly available COAs and third-party testing. Steady Matcha does not conduct or claim ownership of third-party test results for other brands.