Understand the source comparison
Signs Follistatin-344 Gone Bad Degraded: Full Comparison
White particles in reconstituted solution Protein aggregation Hydrophobic regions exposed due to denaturation bond to each other 24–72 hours after temperature excursion or improper reconstitution Peptide is no longer biologically active. Discard immediately Ye
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- White particles in reconstituted solution
- Protein aggregation
- Hydrophobic regions exposed due to denaturation bond to each other
- 24–72 hours after temperature excursion or improper reconstitution
- Peptide is no longer biologically active. Discard immediately
- Yellow or brown discoloration in powder
- Oxidative degradation or Maillard reactions
- Methionine/cysteine oxidation or glycation from heat/humidity exposure
- 72 hours to 2 weeks depending on storage temperature
- Advanced degradation. Do not use
- Cloudiness or turbidity after reconstitution
- Aggregation or microbial contamination
- Protein misfolding or bacterial growth in non-sterile solution
- Immediate if contaminated; 48–96 hours if thermally stressed
- Test pH and discard if outside 6.5–7.5 range
- Broken vacuum seal (no hiss on first puncture)
- Air and moisture ingress
- Oxidation and hydrolysis accelerate in presence of oxygen and humidity
- May occur during shipping or storage. Check before reconstitution
- Assume compromised even if powder looks normal
- Incomplete dissolution (clumping, sediment)
- Irreversible aggregation
- Peptide has already denatured; hydrophobic clusters won't dissolve
- Visible immediately upon reconstitution attempt
- Discard. Forcing dissolution damages remaining intact peptide
- pH below 6.0 or above 8.0
- Chemical degradation or contamination
- Peptide bond hydrolysis (low pH) or bacterial metabolites (high pH)
- Develops over days to weeks in improperly stored reconstituted solution
- Non-recoverable. Peptide structure compromised