How Much Psilocybin Is in 1 Gram of Mushrooms? Potency Explained
Quick Summary
One gram of dried mushrooms does not equal a fixed amount of psilocybin. Potency varies by batch. Laboratory testing typically reports psilocybin in milligrams per gram, which determines actual chemical exposure.
Weight measures mass.
Potency measures chemistry.
When someone consumes one gram of dried mushrooms, they are measuring plant material. They are not directly measuring how much psilocybin is in 1 gram.
Why Does Potency Vary?
| Mushroom Weight | Potency (mg/g) | Total Psilocybin |
|---|---|---|
| 0.1g | 8 mg/g | 0.8 mg |
| 0.2g | 8 mg/g | 1.6 mg |
| 1.0g | 8 mg/g | 8 mg |
| 1.0g | 12 mg/g | 12 mg |
Psilocybin concentration depends on:
- Genetics
- Growing conditions
- Substrate composition
- Harvest timing
- Storage
Even within the same strain, potency varies between batches.
How Is Psilocybin Content Calculated?
If a batch tests at 6 mg psilocybin per gram, then 1 gram equals 6 mg psilocybin.
If another batch tests at 12 mg psilocybin per gram, then 1 gram equals 12 mg psilocybin.
Same weight. Double the active compound. This is why lab testing matters.
What Do Lab Reports Show?
Laboratories typically measure:
- Psilocybin
- Psilocin
- Sometimes related compounds
Results are expressed in milligrams per gram.
Weight tells you how much material you consumed. Lab potency tells you what you absorbed chemically. Understanding the difference between psilocybin and psilocin adds further context to what lab numbers represent.
Why Does This Matter for Microdosing?
At microdose levels, small milligram differences become proportionally significant. A difference of 1 milligram may double effective exposure at sub-perceptual ranges.
Precision depends on testing. Capsules made from tested material provide more predictable dosing than unmeasured dried material.
Does Storage Affect Potency Numbers?
Potency numbers reflect time of testing. Heat, moisture, and light can gradually reduce active compound levels. Storage conditions determine how long tested potency remains accurate.
A 10 percent degradation at 2 mg exposure is noticeable.
Measurement reduces guesswork.
ShroomDash Editorial Team
Published 2026-02-20 · 6 min read · Dosing
