Stability Testing

Long-term and accelerated stability studies to determine peptide shelf life and establish optimal storage conditions

Last reviewed April 17, 2026

Quick Answer

How does ICH Q1A peptide stability testing work and how long does it take?

ICH Q1A(R2) peptide stability testing combines accelerated studies (40°C/75% RH for 3–6 months) with long-term studies (25°C/60% RH up to 24 months). We track purity loss by HPLC and identify degradation products by LC-MS at each pull point, then statistically project shelf life. Accelerated data is available in 90 days; long-term data continues per protocol.

•Conditions: 25°C/60% RH long-term, 40°C/75% RH accelerated, 5°C reference

•Standards: ICH Q1A(R2), Q1B (photostability), Q1E (statistical analysis)

•Pull points: 0, 1, 3, 6, 9, 12, 18, 24 months (customizable)

•Sample needed: enough material for all timepoints (typically 50–200 mg)

•Output: shelf-life projection + degradation product identification

Comprehensive Stability Studies

Our professional peptide stability testing services provide critical data on peptide degradation kinetics, shelf life, and optimal storage conditions. We conduct both accelerated and long-term stability studies following ICH guidelines to support research applications and regulatory submissions.

Accelerated Stability Testing

Elevated temperature and humidity studies to predict peptide degradation and estimate shelf life in shortened timeframes (3-6 months).

Long-Term Stability Studies

Real-time stability monitoring under recommended storage conditions to establish definitive shelf life (6-36 months).

Stress Testing

Exposure to extreme conditions (temperature, pH, light, oxidation) to identify degradation pathways and formulation weaknesses.

Freeze-Thaw Studies

Multiple freeze-thaw cycle testing to determine peptide stability during storage, shipping, and handling.

What We Measure

Purity Changes

HPLC analysis at each timepoint to track peptide purity and formation of degradation products

Chemical Degradation

Mass spectrometry to identify oxidation, deamidation, hydrolysis, and other chemical modifications

Physical Changes

Visual inspection, pH measurement, and analysis of aggregation, precipitation, or color changes

Concentration Stability

Quantification to assess concentration changes due to degradation or adsorption to container surfaces

Study Conditions

Accelerated

• 40°C / 75% RH
• Testing: 0, 1, 3, 6 months
• Predicts 2-year shelf life

Long-Term

• 25°C / 60% RH or 2-8°C
• Testing: 0, 3, 6, 12, 24, 36 months
• Establishes true shelf life

Stress

• 50-70°C, pH 2-10, light
• Testing: hours to weeks
• Identifies degradation pathways

Stability Testing FAQ

Accelerated stability testing uses elevated temperature and humidity (40°C/75% RH) to predict shelf life in 3-6 months. Long-term testing monitors peptides under recommended storage conditions (25°C/60% RH or 2-8°C) over 6-36 months for definitive shelf life data.

We typically require 50-100 mg of peptide to allow for multiple timepoint analyses throughout the study duration. The exact amount depends on the number of timepoints and analytical methods selected.

Accelerated studies run 3-6 months with interim results at 1 and 3 months. Long-term studies can extend 6-36 months with periodic testing. Stress testing results are typically available within days to weeks.

We monitor oxidation, deamidation, hydrolysis, aggregation, and other chemical modifications using HPLC purity analysis and mass spectrometry at each timepoint to build a complete degradation profile.

Yes, our stability studies follow ICH Q1A guidelines and provide data suitable for IND applications and other regulatory submissions. We include full documentation of study conditions, methods, and statistical analysis of degradation kinetics.

We test standard ICH conditions including refrigerated (2-8°C), room temperature (25°C/60% RH), and accelerated (40°C/75% RH). We can also test custom conditions such as -20°C, -80°C, freeze-thaw cycling, and light exposure per ICH Q1B photostability guidelines.

We use statistical regression analysis of purity decline over time to calculate the point at which the peptide falls below its specification limit (typically 90-95% purity). Accelerated data is extrapolated using Arrhenius kinetics, while real-time data provides definitive expiration dating.

Yes, we test peptide stability in reconstituted solutions at various concentrations, pH levels, and buffer systems. This is particularly important for compounding pharmacies and researchers who need in-use stability data after reconstitution.

Yes, we provide interim reports at each scheduled timepoint (typically 0, 1, 3, and 6 months for accelerated studies). This allows you to monitor trends early and make informed decisions about formulation or storage without waiting for the full study to complete.