FAQ
PrymaLab - FAQ
Explore Common Questions About PrymaLab's Research Peptides
GENERAL QUESTIONS
What does PrymaLab do?
PrymaLab is an American-made peptide research supply company. We specialize in providing the purest research peptides, lyophilized peptide compounds, and liquid research chemicals to scientists, laboratories, and qualified researchers worldwide. Every product in our catalog is manufactured in the USA and guaranteed to meet 99%+ purity standards verified through HPLC testing and third-party analysis.
Are your products safe to consume or ingest?
Absolutely not. Every product sold on PrymaLab.net is strictly for research purposes only and is not intended for human consumption under any circumstances. If any product is intentionally or accidentally ingested, contact a healthcare provider immediately. Any customer who indicates intent to consume our research peptides will have their order canceled and their account permanently suspended. PrymaLab will not discuss potential effects of ingestion — doing so would be unlawful.
How long does it take for PrymaLab to process and ship orders?
Most orders are processed and shipped the same day they are placed. Orders submitted after 12:00 PM EST will ship the following business day (excluding Sundays). Because all of our research peptides ship from within the United States, delivery times are exceptionally fast regardless of your chosen payment method.
Do you accept phone orders?
We do not process orders by phone. We utilize a professional answering service that will forward your inquiry to our support team, but all research peptide orders must be placed directly through our website at PrymaLab.net to ensure accuracy and security.
I clicked "Process Order" at checkout but nothing happened. Did my order go through?
If your order did not process, try clearing your browser's cache or switching to a different browser. When you successfully click "Process Order," a processing status bar will appear — this typically completes within 30 seconds. If it takes longer than 2 minutes, contact our support team for assistance. Check your inbox and spam/junk folders for an automatic confirmation email, which is sent immediately upon successful completion. Our live chat is available from 9 AM–9 PM EST for real-time help.
I entered the wrong shipping address. How do I fix it?
Contact our support team as soon as possible and we will update your shipping information. If your order has already shipped with incorrect details, you will need to wait until the package is returned to our facility before we can reship it. We cover reshipping fees for domestic orders within the USA. International reship fees are the customer's responsibility.
Where can I find my previous orders?
Log into your account on PrymaLab.net to view your complete order history. If you placed an order before creating a free account, contact our support team and we will locate it for you.
I lost my username or password. What should I do?
You can reset your password using the password recovery page on our website. Simply enter the email address associated with your account to receive reset instructions.
SHIPPING & DELIVERY
Who delivers PrymaLab orders?
PrymaLab is an American-made peptide research supply company. We specialize in providing the purest research peptides, lyophilized peptide compounds, and liquid research chemicals to scientists, laboratories, and qualified researchers worldwide. Every product in our catalog is manufactured in the USA and guaranteed to meet 99%+ purity standards verified through HPLC testing and third-party analysis.
Where does PrymaLab ship from?
Absolutely not. Every product sold on PrymaLab.net is strictly for research purposes only and is not intended for human consumption under any circumstances. If any product is intentionally or accidentally ingested, contact a healthcare provider immediately. Any customer who indicates intent to consume our research peptides will have their order canceled and their account permanently suspended. PrymaLab will not discuss potential effects of ingestion — doing so would be unlawful.
How much does shipping cost?
Most orders are processed and shipped the same day they are placed. Orders submitted after 12:00 PM EST will ship the following business day (excluding Sundays). Because all of our research peptides ship from within the United States, delivery times are exceptionally fast regardless of your chosen payment method.
Does PrymaLab offer overnight shipping?
We do not process orders by phone. We utilize a professional answering service that will forward your inquiry to our support team, but all research peptide orders must be placed directly through our website at PrymaLab.net to ensure accuracy and security.
What does "USA Only" mean on a product?
Certain research peptide compounds are restricted to domestic shipping only due to varying international regulations. If a product is marked "USA Only," you will not be able to complete checkout with that item if your shipping address is outside the United States.
Why isn't my country listed on the checkout page?
If your order did not process, try clearing your browser's cache or switching to a different browser. When you successfully click "Process Order," a processing status bar will appear — this typically completes within 30 seconds. If it takes longer than 2 minutes, contact our support team for assistance. Check your inbox and spam/junk folders for an automatic confirmation email, which is sent immediately upon successful completion. Our live chat is available from 9 AM–9 PM EST for real-time help.
Why does USPS tracking not show further updates?
Contact our support team as soon as possible and we will update your shipping information. If your order has already shipped with incorrect details, you will need to wait until the package is returned to our facility before we can reship it. We cover reshipping fees for domestic orders within the USA. International reship fees are the customer's responsibility.
My order is taking longer than estimated. What should I do?
Log into your account on PrymaLab.net to view your complete order history. If you placed an order before creating a free account, contact our support team and we will locate it for you.
My order cleared customs but still hasn't arrived. Why?
You can reset your password using the password recovery page on our website. Simply enter the email address associated with your account to receive reset instructions.
Can you declare my package as a gift?
No. PrymaLab will not misrepresent any information on customs documentation. It is the buyer's responsibility to understand taxes, duties, or VAT associated with importing research peptides into their country.
PRODUCTS & QUALITY
How can I be sure PrymaLab's research peptides are genuine?
Our reputation depends on delivering the purest research peptides available. Every product is tested using HPLC analysis and mass spectrometry to verify molecular identity and purity. We guarantee 99%+ purity on all research peptides — if any product fails to meet this standard, we replace it free of charge. Certificates of analysis are available with your order for complete transparency.
Where are PrymaLab's peptides manufactured?
All of our research peptides and liquid research chemicals are proudly manufactured in the United States. PrymaLab is committed to American-made quality, ensuring every product meets the highest standards of purity, potency, and scientific integrity.
Does PrymaLab accept returns or offer refunds?
For health and safety reasons, we do not accept returns or issue refunds on research peptide products. However, we stand behind our 99%+ purity guarantee — if any product does not meet this standard, we replace it at no cost.
Are the reviews on PrymaLab.net legitimate?
Yes. We use an independent third-party review platform. Reviews cannot be submitted directly from our website — the only way to leave a review is through a verified email sent after you receive your research peptides. Every review comes from a verified customer.
Will PrymaLab ship products without labels?
No. All products ship with proper labeling including product name, potency, lot number, expiration date, and warnings. However, we offer white-label options — custom labels with your company's logo or generic labels without branding. This service is included with wholesale research peptide orders. Contact us within 24 hours of placing your order to coordinate labeling. Orders not updated within 24 hours ship with standard PrymaLab labels.
How should I store research peptides?
All lyophilized research peptides are stable at room temperature for approximately two years in sealed vials. Once reconstituted with bacteriostatic water, store in the refrigerator to maintain potency. For long-term storage of unreconstituted peptides, −20°C or −80°C is ideal.
Do liquid research chemicals need refrigeration?
No. All liquid research chemicals are stable at room temperature. However, we recommend refrigerating any research peptides after reconstitution with bacteriostatic water to preserve stability.
What does "lyophilized" mean?
Lyophilized is the scientific term for freeze-dried. It describes the state in which our research peptides are shipped and stored. Lyophilized peptides remain stable at room temperature for approximately two years and do not require refrigeration until reconstituted. This method preserves molecular integrity, purity, and potency throughout storage and transit.
The powder in my peptide vial looks different, is this normal?
Yes, completely normal. Most lyophilized research peptides appear as a solid mass, but shipping and handling may cause it to break apart and appear powdery. This does not affect purity, potency, or quality in any way.
My peptide didn't dissolve immediately, is something wrong?
No — this is perfectly normal. Some research peptides take a few moments to fully dissolve after reconstitution with bacteriostatic water. Gently roll the vial between your fingers to help. Never shake the vial, as this may damage the peptide's molecular structure.
How do I store Melanotan 2?
Like all of our lyophilized research peptides, Melanotan 2 is stable at room temperature for approximately two years. Once reconstituted with bacteriostatic water, store in the refrigerator. For long-term storage, keep unreconstituted vials at −20°C or −80°C.
My liquid research chemical appears cloudy, is this normal?
Yes, this is normal for certain liquid research chemicals. Vigorously shake the bottle before each use in your research experiments to ensure proper mixing and uniform concentration.
TECHNICAL & SCIENTIFIC
How does PrymaLab synthesize its research peptides?
PrymaLab maintains strategic partnerships with specialized laboratories to produce the highest-purity research peptides available. Our peptides are synthesized using solid-phase peptide synthesis (SPPS) based on Fmoc or t-Boc chemistry to protect the alpha amino group during assembly.
The process builds peptide chains from the C-terminus to the N-terminus — the reverse of natural protein synthesis. A deprotection agent removes the protective group, preparing it for coupling with the next amino acid via peptide bond formation. This cycle repeats until the full target sequence is assembled.
Once complete, the peptide is cleaved from the resin, deprotected, precipitated, washed, and lyophilized into freeze-dried powder. Every batch undergoes HPLC purification and mass spectrometry analysis to confirm molecular identity, sequence accuracy, and purity.
What are PrymaLab's quality control standards?
Every research peptide undergoes rigorous quality verification:
- HPLC Purification & Analysis — Peptides are purified using reverse-phase chromatography, identifying by-products present.
- Mass Spectrometry Verification — Molecular mass is confirmed to validate the correct target sequence.
- Net Peptide Content Analysis — Amino acid evaluation confirms composition and identity.
- Certificates of Analysis — Complimentary HPLC and MS results provided with most orders. Any peptide not meeting our 99%+ purity standards is discarded. All products are considered the confidential property of the purchaser.
- HPLC Purification & Analysis — Peptides are purified using reverse-phase chromatography, identifying by-products present.
- Mass Spectrometry Verification — Molecular mass is confirmed to validate the correct target sequence.
- Net Peptide Content Analysis — Amino acid evaluation confirms composition and identity.
- Certificates of Analysis — Complimentary HPLC and MS results provided with most orders. Any peptide not meeting our 99%+ purity standards is discarded. All products are considered the confidential property of the purchaser.
What does 99% purity mean?
Peptide purity is the percentage of the target sequence present among total peptide material, measured by HPLC at 214 nm. During synthesis, some chains may be incomplete or contain errors. PrymaLab purifies all research peptides using reverse-phase HPLC and verifies with mass spectrometry to achieve 99%+ purity — meaning 99% or more of the material is the exact compound you ordered. Guaranteed.
What is net peptide content?
Net peptide content is the percentage of actual peptide material relative to total product weight, which includes non-peptide components like water, salts, solvents, and counter ions. It typically ranges from 70–85%. Peptide purity measures the target sequence among all peptide material, while net peptide content measures peptide weight among total weight. Account for net peptide content when calculating concentrations for research experiments.
How should I dissolve or reconstitute research peptides?
Solubility depends on the peptide's polarity and amino acid composition:
Step 1: Determine Charge
- Assign +1 to basic residues: Arg (R), Lys (K), His (H), N-terminal amine
- Assign −1 to acidic residues: Asp (D), Glu (E), C-terminal carboxyl
Step 2: Choose Solvent
Basic peptides (positive charge): Try sterile distilled water first. If unsuccessful, try 10–25% acetic acid, then TFA (10–50 µl).
Acidic peptides (negative charge): Try PBS (pH 7.4). If unsuccessful, add 0.1 M ammonium bicarbonate. Cysteine-containing peptides require de-gassed acidic buffers.
Neutral peptides (zero charge): Try acetonitrile, methanol, or isopropanol. For hydrophobic peptides, use DMSO then dilute with water. For Cys-containing peptides, use DMF instead.
Tips: Test a small portion first. Never shake vials. Store reconstituted peptides refrigerated. Avoid freeze-thaw cycles. Keep lyophilized peptides at −20°C or −80°C long-term.
Step 1: Determine Charge
- Assign +1 to basic residues: Arg (R), Lys (K), His (H), N-terminal amine
- Assign −1 to acidic residues: Asp (D), Glu (E), C-terminal carboxyl
Step 2: Choose Solvent
Basic peptides (positive charge): Try sterile distilled water first. If unsuccessful, try 10–25% acetic acid, then TFA (10–50 µl).
Acidic peptides (negative charge): Try PBS (pH 7.4). If unsuccessful, add 0.1 M ammonium bicarbonate. Cysteine-containing peptides require de-gassed acidic buffers.
Neutral peptides (zero charge): Try acetonitrile, methanol, or isopropanol. For hydrophobic peptides, use DMSO then dilute with water. For Cys-containing peptides, use DMF instead.
Tips: Test a small portion first. Never shake vials. Store reconstituted peptides refrigerated. Avoid freeze-thaw cycles. Keep lyophilized peptides at −20°C or −80°C long-term.
What are APIs?
APIs (Active Pharmaceutical Ingredients) are biologically active substances in pharmaceutical drugs. Since PrymaLab's products are sold strictly for research and development purposes, our liquid research chemicals are not classified as APIs — their intended use as research materials places them in a different regulatory classification.
What are linkers and resins?
In solid-phase peptide synthesis, a resin is the polymeric backbone to which amino acid substrates attach during synthesis. Linkers are intermediate structures connecting the resin to the substrate, controlling which functional groups are exposed. The resin-linker combination directly impacts synthesis efficiency and peptide quality.
Does PrymaLab offer custom peptide synthesis?
Yes. We provide custom peptide synthesis for researchers requiring specific sequences, modifications, or formulations. Contact our team with your requirements and we will respond within 48 hours with a detailed answer and quote. Visit our Custom Peptide Synthesis Page for more information.
Where can I find more information about specific peptides?
Extensive scientific literature is available online for the research peptides in our catalog. PrymaLab does not comment on alleged uses or administration methods. By purchasing from PrymaLab.net, you confirm you are qualified to handle research peptide compounds and will not ingest any products.
I haven't received an email about my order. What should I do?
I haven't received an email about my order. What should I do?
A: Check your spam or junk folder. Our system automatically sends:
If you can't locate these emails, contact our support team for assistance.
A: Check your spam or junk folder. Our system automatically sends:
Order Received — Immediately upon placement
Order Complete — When processed and packaged
Tracking Information — When shipped with USPS tracking
If you can't locate these emails, contact our support team for assistance.
Get Free Expert Peptide Guidance From Our Research Team
Still have questions about choosing the right research peptides, reconstitution protocols, or placing your first order? Our knowledgeable peptide specialists are standing by to provide the personalized support your research deserves — completely free.
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Email Support
support@prymalab.net
michael@prymalab.net
Head Office
3705 Music Branch
Ashland Kentucky 41102 - United States
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Phone: +1 (606) 465-9063