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Frequently Asked Questions
Find answers to common questions about our research peptides and services.
What are peptides?
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Is it legal to sell peptides in the U.S. for research purposes only?
We are unable to accept returns on certain items. These will be carefully marked before purchase.
How do I use peptides?
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Do I need a prescription to purchase peptides from BiotechCompounds?
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
How should I store my peptides?
Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.
How long does shipping take?
Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.
Do you ship internationally?
Yes, we ship to many countries worldwide. Please note that international shipping times may vary, and additional customs fees may apply depending on your country's regulations.
What payment methods do you accept?
We accept various payment methods, including major credit cards (Visa, MasterCard, American Express) via PayPal, BTC, ETH, and ADA.
How can I contact customer service?
You can reach our customer service team through our contact page. We are here to assist you with any questions or concerns you may have.
What is HPLC testing and why does it matter for peptide purity?
High-Performance Liquid Chromatography (HPLC) is an analytical technique that separates, identifies, and quantifies each component in a peptide sample. It is the industry-standard method for determining peptide purity because it can detect impurities at very low concentrations.
When a peptide undergoes HPLC testing, the sample is dissolved and passed through a column under high pressure. Each component elutes at a different time, producing a chromatogram that shows the relative abundance of the target peptide versus any contaminants. A purity reading of 98% or higher is generally considered research-grade. All Biotech Compounds products are tested using HPLC, and results are documented in each product
What is a Certificate of Analysis (COA)?
A Certificate of Analysis (COA) is an official document issued by a testing laboratory that reports the results of quality-control tests performed on a specific batch of product. It typically includes purity percentage, molecular weight confirmation, batch number, and the testing methods used.
COAs provide transparency and allow researchers to verify that the materials they receive meet the specifications listed on the product label. Biotech Compounds publishes COAs for all products, which can be viewed and downloaded from
What purity level are Biotech Compounds peptides?
Biotech Compounds peptides are manufactured to a minimum purity of 98%, with most products exceeding 99% purity as verified by independent HPLC and mass spectrometry analysis. Batch-specific purity data is available on each product's Certificate of Analysis.
How should research peptides be stored for maximum stability?
Lyophilized (freeze-dried) peptides should be stored at -20°C or colder in a sealed container protected from moisture and light. Under these conditions, most peptides remain stable for 12 months or longer. Reconstituted peptides should be refrigerated at 2-8°C and used within 4-6 weeks.
Avoid repeated freeze-thaw cycles, which can degrade peptide integrity. If you need to use a reconstituted peptide over multiple sessions, consider aliquoting the solution into single-use portions. For reconstitution instructions
What is peptide reconstitution?
Reconstitution is the process of dissolving a lyophilized (freeze-dried) peptide powder into a liquid solution using bacteriostatic water or another appropriate solvent. This step is necessary before the peptide can be accurately measured and used in research applications.
The volume of solvent added determines the final concentration of the provides a step-by-step video walkthrough, can help determine the correct draw volume for your target dose.
What is the difference between lyophilized and reconstituted peptides?
Lyophilized peptides are in a dry, freeze-dried powder form as shipped. Reconstituted peptides have been dissolved into a liquid solution using bacteriostatic water. Lyophilized peptides have a longer shelf life and greater stability, while reconstituted peptides are ready for immediate use but must be refrigerated.
All Biotech Compounds peptides ship in lyophilized form for maximum stability during transit and storage. Researchers reconstitute them as needed for their specific protocols.
What does 'For Research Use Only' mean?
"For Research Use Only" (RUO) means the product is intended exclusively for laboratory research, scientific investigation, and educational purposes. RUO products are not approved for human or animal consumption, diagnostic procedures, or therapeutic applications.
This designation is consistent with FDA labeling guidelines under 21 CFR §809.10. Researchers are responsible for complying with all applicable regulations. For full details,
Can I view batch-specific test results for my order?
Yes. Biotech Compounds publishes Certificates of Analysis for all products, organized by product name and batch number. You can search for your specific batch on our COA page to view HPLC purity data, mass spectrometry results, and other quality metrics.
use the search function to find your product by name or batch number. If you cannot locate your COA, contact our support team for assistance.