In scientific research, precise measurements are everything. A common mistake is confusing Milligrams (mg) with Micrograms (mcg). This order-of-magnitude error can result in doses that are 1000x too high or too low.
The Metric Conversion Rule
The Golden Ratio
One Milligram equals One Thousand Micrograms
Real World Examples
Most peptide vials are sold in mg (e.g., "5mg vial"). However, most research protocols specify doses in mcg (e.g., "250mcg"). To bridge this gap, you must convert the units. Knowing how to calculate peptide concentration is essential here.
Converting MG to MCG
Multiply by 1000. Move decimal 3 places right.
- 0.1 mg = 100 mcg
- 0.5 mg = 500 mcg
- 1.0 mg = 1000 mcg
- 2.5 mg = 2500 mcg
Converting MCG to MG
Divide by 1000. Move decimal 3 places left.
- 100 mcg = 0.1 mg
- 250 mcg = 0.25 mg
- 500 mcg = 0.5 mg
- 1000 mcg = 1.0 mg
Why "IU" is confusing
You might hear the term "IU" (International Units) used with HGH or Insulin. Most peptides do not use IU. They use mass (mcg).
However, because researchers use "Insulin Syringes" which are marked in "Units", people often say "Take 10 Units". This requires reading an insulin syringe correctly.
Important Distinction:
"10 Units" on the syringe usually means 0.1ml of volume. How many mcg of peptide is in that 0.1ml depends entirely on how much water you added (the concentration). You can use our ultimate reconstitution calculator to help with this.
Also, be aware of peptide purity and net content, as raw weight isn't always active weight. Visualizing your data with visualizing dosing charts can help catch order-of-magnitude errors.