Some do, some don't — it varies by lab. Growth-tier and scale-tier manufacturers often include accelerated ICH Q1A stability testing (40 °C / 75 % RH, 6 months) in their contracts. Indie-tier labs may charge separately, typically $500–$2,500 per formula. Always confirm stability protocol scope before signing. Manufacturers on the AJ Cosmo Labs platform list their testing capabilities upfront in their profiles.
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