Independent Analytical Laboratory

Where molecules meet certainty.

Full-scope analytical testing for peptides and small molecules. Identity, purity, assay, stability, impurity profiling — all under one roof, with results you can trust and report on.

RP-HPLC Purity Analysis · Sample PT-4421 Analysis complete
97.2% 1.4% 0.6% 0 5 10 15 20 25 min
97.2% Purity
3 Peaks found
98.6% Assay
Serving
Peptide Manufacturers Pharma Companies Biotech Firms CROs & CDMOs Research Institutions Peptide Vendors
Analytical Services

Every test your compound needs.
One lab.

Eight categories of analytical testing — from first-pass identity confirmation to ICH-aligned stability studies and full impurity characterization.

Identity Testing
Purity Testing
Quantitative Assay
Water Content
Residual Solvents
Counterion Analysis
Stability Testing
Impurity Profiling
Identity Testing
Confirm your compound is exactly what it claims to be
Critical
Tests performed
LC-MS identity confirmation
Molecular weight verification
ESI-MS analysis
LC-MS/MS sequence confirmation
Deliverables
Mass spectrum with annotated peaks
Molecular weight confirmation report
Identity Certificate of Analysis
Purity Testing
Determine purity and detect related substances
Critical
Tests performed
Analytical RP-HPLC purity
UPLC purity analysis
Related substance analysis
Peak area % determination
Deliverables
Annotated chromatogram
Purity percentage report
Impurity summary table
Quantitative Assay
Determine content, concentration, and potency
High priority
Tests performed
HPLC assay
Potency determination
Label claim verification
Deliverables
Assay percentage vs. specification
Potency report
Concentration result with uncertainty
Water Content
Precise moisture for lyophilized and bulk materials
High priority
Tests performed
Coulometric Karl Fischer titration
Volumetric KF (high-moisture)
Moisture % determination
Deliverables
Water content percentage report
Compendial method compliance statement
Residual Solvents
ICH Q3C-compliant solvent testing
High priority
Tests performed
Headspace GC-FID
ACN, MeOH, DMF, DCM, TFA panel
Full ICH Q3C Class 1, 2 & 3 solvents
GC-MS confirmation of unknowns
Deliverables
Solvent levels in ppm
ICH Q3C compliance assessment
Counterion Analysis
Salt form and counterion content determination
High priority
Tests performed
Ion chromatography (IC)
TFA quantification
Acetate quantification
Chloride / HCl analysis
Deliverables
Counterion percentage report
Salt form verification
Net peptide content calculation
Stability Testing
Shelf-life evaluation under ICH conditions
Premium
Tests performed
Accelerated stability (40°C / 75% RH)
Long-term stability (25°C / 60% RH)
Freeze-thaw cycling
Oxidative & pH stress studies
Deliverables
Full stability report with trend data
Degradation profile
Shelf-life assessment
Impurity Profiling
Detect, identify, and characterize all related impurities
Premium
Tests performed
HPLC impurity profiling
LC-MS/MS structural characterization
Deletion & truncated peptide ID
Oxidation & deamidation detection
Deliverables
Full impurity profile report
Unknown peak identification
Structural assignment report
Testing Packages

Pre-built panels or fully custom.

Common testing needs bundled for simplicity. Not sure which fits? We'll scope the right panel for your compound and regulatory stage in one conversation.

Basic QC
Research-stage and early development. Get confidence in what you made.
  • RP-HPLC purity
  • LC-MS identity confirmation
  • Karl Fischer water content
  • Certificate of Analysis
Advanced Characterization
Complete profile for regulatory filings, IND submissions, and clinical batches.
  • All Standard Release tests
  • ICH-aligned stability testing
  • Full impurity profiling
  • LC-MS/MS structural ID
  • Degradation profile report
  • Shelf-life assessment
How It Works

From sample submission to signed COA.

No guesswork. Every step is documented, reviewed, and communicated — so you always know where your sample stands.

1
Submit request

Tell us your compound type and testing needs. We confirm scope, turnaround, and pricing within one business day.

2
Ship your sample

Send with our sample submission form. We handle peptides, APIs, formulations, lyophilized powders, and reference standards.

3
Analysis & QA review

Our scientists run all agreed methods. Every result undergoes a full internal QA review before any data leaves the lab.

4
Receive your COA

Certificate of Analysis delivered with raw data, chromatograms, spectra, and a plain-language summary you can hand to a client.

8+
Analytical service categories for peptides & small molecules
48h
Standard turnaround for identity + purity testing
100%
QA-reviewed before every report is issued
ICH
Guideline-aligned methods across all service categories
Who We Serve

Built for every stage of your pipeline.

From academic discovery to commercial release — if you work with peptides or small molecules, we have a testing solution for your stage.

🏭
Peptide Manufacturers

GMP and research-grade production. Routine batch release, specification testing, and COA generation for catalog or custom peptides.

💊
Pharma & Biotech

API characterization, IND-enabling studies, and regulatory-grade impurity profiling for peptide and small molecule drug candidates.

⚗️
CROs & CDMOs

Overflow testing capacity, specialized assay support, and independent third-party testing for your clients' compounds.

🔬
Research Institutions

Universities, institutes, and government labs needing reliable analytical support without in-house instrumentation.

📦
Peptide Vendors

Third-party QC for catalog products. Give your customers confidence with independent purity and identity data on every lot.

🧬
Emerging Biotech

Lean teams that need full analytical coverage without building a lab. We become your analytical department.

Get In Touch

Ready to test your compound?

Tell us what you have and what you need. We'll come back within one business day with a clear scope, turnaround estimate, and quote.

📧
Email
test@peptily.com
📍
Location
Thousand Oaks, CA
⏱️
Response time
Within 1 business day
🕐
Lab hours
Mon – Fri, 8:00 AM – 5:00 PM PT