Analytical Testing Services

Peptide Purity & Identity Testing

Peptides represent the most analytically demanding class of research compounds. Small sequence errors, racemisation events, or degradation products can be invisible to the naked eye yet critically relevant to research outcomes.

Our peptide testing service employs reverse-phase HPLC-UV for purity quantification and LC-MS/MS for definitive identity confirmation. We routinely analyse peptides from 2 to 50+ amino acids including cyclic peptides, PEGylated constructs, and modified sequences.

• Purity by RP-HPLC (% area, UV 214nm/220nm)
• Molecular weight confirmation by ESI-MS
• Related substances / impurity profiling
• Water content (Karl Fischer titration) — optional
• Net peptide content — optional

Turnaround

Standard 7–10 days | Express 3–5 days | Priority 48h

Sample requirement

Minimum 5mg lyophilised powder or 1mL solution

SARM & Small Molecule Testing

Selective androgen receptor modulators and other small molecule research chemicals require precise quantitative analysis to confirm identity and label claim accuracy.

We use validated HPLC-UV and LC-MS/MS methods for over 40 commonly researched small molecules, with reference standards traceable to certified primary sources.

• Quantitative assay (% label claim)
• Identity confirmation by LC-MS/MS
• Impurity profiling
• Appearance and organoleptic assessment

Turnaround

Standard 5–7 days | Express 3 days | Priority 48h

Sample requirement

Minimum 50mg powder, 1mL oil solution, or 2 capsules

Heavy Metal Screening

Contamination with heavy metals — particularly lead, arsenic, cadmium, and mercury — is a serious risk in compounds sourced from unregulated supply chains.

Our ICP-MS platform delivers sub-ppb detection limits for 24 elements simultaneously, benchmarked against EU pharmacopoeia (Ph. Eur. 2.4.20) and USP <232> limits.

• 24-element ICP-MS scan
• Reporting vs. Ph. Eur. / USP / client limits
• Elements: Pb, As, Cd, Hg, Cr, Ni, Cu, Mo, V, Sn, and more

Turnaround

Standard 7 days | Express 4 days

Sample requirement

Minimum 100mg powder or 1mL solution

Microbial & Endotoxin Testing

For compounds intended for parenteral research use, microbial contamination and endotoxin burden are critical safety parameters.

• Bacterial endotoxins (LAL kinetic turbidimetric method)
• Total aerobic microbial count (TAMC)
• Total yeast and mould count (TYMC)
• Specified organisms (E. coli, Salmonella, S. aureus, P. aeruginosa)

Turnaround

Standard 10 days (incubation-dependent)

Sample requirement

Minimum 200mg powder or 2mL solution (aseptic conditions required)

Residual Solvent Analysis

Residual solvents from synthesis and purification processes are a primary safety concern per ICH Q3C guidelines.

• Class 1 solvents (benzene, carbon tetrachloride, etc.)
• Class 2 solvents (acetonitrile, methanol, DCM, DMF, etc.)
• Class 3 solvents (ethanol, acetone, isopropanol, etc.)
• Custom solvent panels on request

Turnaround

Standard 5–7 days

Sample requirement

Minimum 50mg