Frequently Asked Questions

NuScience Peptides supplies high-purity research-grade compounds strictly intended for laboratory, in-vitro, and analytical research. Every product is verified to 99%+ purity by HPLC and mass spectrometry through independent third-party laboratories.

HPLC purity measures the relative percentage of the target peptide compared to peptide-related impurities. Net peptide content accounts for non-peptide components in the lyophilized cake such as residual water, salts, and counter-ions. A vial with 99% HPLC purity may have a net peptide content between 80% to 90%.

It means the compound is supplied strictly as a laboratory reagent for in-vitro research and analytical testing. Products are not intended for human or veterinary consumption, medical treatment, or diagnostic applications.

Match the lot number printed on your vial to its batch-specific certificate on our Lab Testing Results page. There you can view and download original HPLC chromatograms and Mass Spec reports.

Un-reconstituted lyophilized powders should be stored below -4°F (-20°C) or -112°F (-80°C) for long-term storage, protected from moisture and intense light. Short-term storage (up to 3 months) can be done at 39°F (4°C). For detailed protocols, visit our Handling & Storage Guide.

Refrigeration at 39°F (4°C) is recommended for short-term handling of lyophilized powders and reconstituted solutions. Freezer storage (-20°C) is preferred for extended stability.

Lyophilized peptide powders are stable at ambient room temperatures during standard carrier shipping (FEDEX, USPS, DHL). Upon receipt, place vials in cold storage for optimal longevity.

Use our interactive Peptide Calculator tool to enter your vial mass (mg), diluent volume (mL), and desired research dose (mcg) for precise U-100 syringe unit conversion.

HPLC separates the target compound from synthesis byproducts and impurities to determine exact chemical purity percentage (held to 99.0%+ specification).

Mass Spectrometry measures the molecular weight of the peptide to confirm chemical identity against theoretical molecular mass.

In-stock orders placed before 12:00 PM EST qualify for same-day shipping. All orders are processed within 1-3 business days. We offer free shipping on all domestic orders totaling $200 or more.

Due to strict laboratory quality control standards and product fragility, we cannot accept returns once shipped. If your package arrives damaged or incomplete, contact info@nuscience-peptide.com for immediate resolution.

All purchases are strictly one-time transactions. We do not operate auto-renewal or subscription billing programs.