Question 1

How is purity measured?

Accepted Answer

Every production lot is analyzed by reverse-phase HPLC for identity and purity, and tested for residual solvents. Each Certificate of Analysis is linked to the specific batch you received. The purity figure shown on each product page reflects the most recent COA on record for that compound.

Question 2

What does '2–8 °C cold chain' actually mean in transit?

Accepted Answer

Every shipment uses validated insulated packaging with phase-change cold packs calibrated to hold contents in the 2–8 °C band for up to 72 hours from ship time. Transit windows are tuned to stay inside that stability budget. If a shipment arrives warm, contact support within 24 hours — we replace at our cost.

Question 3

Why a prefilled pen instead of a lyophilized vial?

Accepted Answer

A pen removes three sources of variance: (1) reconstitution with bacteriostatic water, (2) dose-volume math from a lyophilized mass, and (3) syringe transfer loss. You click a dose on the dial and inject — the concentration is fixed and released against pre-registered specification. Nothing to reconstitute, nothing to calculate.

Question 4

How does your cost per milligram compare to powder vials?

Accepted Answer

Most competitor research vials ship 5 mg or 10 mg of lyophilized powder. Our pens typically carry 5, 15, or 30 mg of active mass. Because of the mass differential, effective $/mg is often 2–3× lower than the comparable powder SKU despite a higher unit price. Every compound's $/mg figure is listed on its product page and in the full compare table.

Question 5

Can I see a sample Certificate of Analysis before ordering?

Accepted Answer

Yes. Every product page links the most recent batch COA, and the Lab results page lists every compound with its batch number, purity, and test date.

Question 6

What's the dose precision on the pen dial?

Accepted Answer

0.1 mg per click on most models. Dial range and maximum-per-injection limits vary by compound — each product's 'Full specification' block on its PDP calls out the exact increment and range for that SKU.

Question 7

How stable is the pen once opened?

Accepted Answer

Unopened pens stored refrigerated are stable until the printed expiration date. In-use stability (after first injection) varies by compound; most research-grade peptides in pen format are stable 28 days at 2–8 °C. Individual product pages carry per-SKU storage and in-use notes.

Question 8

Where is manufacturing done?

Accepted Answer

Every batch is produced in a licensed EU pharmaceutical facility operating under cGMP. Release testing follows pre-registered identity and purity specifications. The specific facility code is shared with institutional buyers on request.

Question 9

What is a research peptide?

Accepted Answer

A peptide is a short chain of amino acids (typically 2–50) that acts as a signalling molecule in biological systems. In a research context, specific peptides are used to study pathways, receptor interactions, and protein behaviour in vitro. Vivaprime supplies chemically defined peptide compounds for exactly this kind of work — sold as research reference material, not as a therapeutic product.

Question 10

What's the difference between GLP-1, GIP, and GLP-2?

Accepted Answer

All three are incretin hormones. GLP-1 (glucagon-like peptide-1) acts on the GLP-1 receptor and is the best-studied in metabolic research. GIP (glucose-dependent insulinotropic polypeptide) acts on a separate receptor and is commonly co-studied with GLP-1. GLP-2 shares sequence similarity with GLP-1 but targets a different receptor and is studied primarily in gut tissue research. Our weight-loss SKUs include triple GLP-1/GIP/glucagon agonists (retatrutide) and amylin analogs (cagrilintide).

Question 11

What does 'AOD-9604' stand for?

Accepted Answer

AOD-9604 is a synthetic fragment (amino acids 176–191) of human growth hormone, studied for its lipolytic — fat-metabolism — activity. It's a non-incretin complement to the GLP-1-axis compounds in metabolic and weight-loss research.

Question 12

What are IU and mg — and why both?

Accepted Answer

mg is a mass unit (milligrams of peptide). IU (International Units) is a potency unit used for some peptides where activity is the reference rather than mass. Our pens are labeled in mg everywhere; a few compounds historically reported in IU are cross-referenced in the full specification block on their PDP.

Question 13

Why would a researcher use a prefilled pen instead of a vial?

Accepted Answer

Three reasons: (1) dose precision — the dial releases a calibrated amount without reconstitution math; (2) stability — the peptide stays in a sealed, factory-prepared solvent system; (3) contamination control — no bacteriostatic water handling, no multi-draw septum wear. Pens trade cost per mg against reproducibility of dosing.

Question 14

What does 'research use only' mean?

Accepted Answer

Vivaprime products are supplied for in-vitro laboratory research by qualified researchers. They are not intended for human or animal consumption, diagnostic, therapeutic, cosmetic, agricultural, or household use. Purchasers affirm this at checkout.

Question 15

Do I need to be affiliated with a lab or institution?

Accepted Answer

We sell to qualified researchers, which includes independent researchers who take responsibility for proper handling and compliance with local regulations. There is no institutional affiliation requirement, but the research-use agreement at checkout is binding.

Question 16

Do you make any therapeutic or health claims?

Accepted Answer

No. Every product description on this site is framed as research context. Any reference to mechanism, pathway, or study is drawn from peer-reviewed literature and is not a claim about efficacy, safety, or intended use.

Question 17

Can I use Vivaprime products in a clinical or IRB-approved study?

Accepted Answer

Our products are sold as research reference material and are not supplied with the pharmaceutical-grade release documentation required for human clinical studies. Institutional buyers running regulated clinical research should source from a GMP pharmaceutical supplier; we'll happily confirm this in writing if your ethics committee requests it.

Question 18

Do I need an account to order?

Accepted Answer

Yes — an account is created on your first order via a one-time magic link emailed to you. There's no password to remember and no application form. The account lets you access order history, COAs for your batch, tracking information, and the one-click reorder button.

Question 19

How does sign-in work?

Accepted Answer

We use magic-link sign-in: you enter your email, we send you a link that signs you in. Links expire in 10 minutes and can only be used once. If you didn't receive one, check spam — sender is orders@vivaprime.bio.

Question 20

Can I edit or cancel an order after placing it?

Accepted Answer

Yes, if it hasn't shipped. Orders marked fulfilled are in transit and can't be changed; for anything else, reply to your order confirmation email or message support@vivaprime.com within a few hours of placing it.

Question 21

Where do I find my tracking number?

Accepted Answer

Once your order ships, you'll receive a Shipping confirmation email with carrier, tracking number, and a direct tracking link. The same information is visible on your order detail page under 'Account → order #'.

Question 22

Can I reorder past purchases?

Accepted Answer

Yes — the reorder button on each past order row on your Account page refills your cart with the same line items using current live pricing. Inactive variants are skipped automatically and a small 'N of M' hint shows how many items transferred.

Question 23

Where do you ship?

Accepted Answer

We ship to all 50 US states. If you're unsure whether we deliver to your address, email support@vivaprime.com before ordering.

Question 24

How are shipments packed?

Accepted Answer

Every shipment uses validated insulated packaging with phase-change cold packs. Transit windows are tuned to keep the product at 2–8 °C for up to 72 hours from ship time.

Question 25

How long does delivery take?

Accepted Answer

Orders ship within 1 business day of payment confirmation. Most US addresses receive their shipment in 2–3 business days.

Question 26

Do you ship on weekends?

Accepted Answer

Carriers pick up Monday through Friday. Orders placed late Friday through Sunday are packed and handed to the carrier on the next business day to avoid the product sitting in a warehouse over the weekend. This protects cold-chain integrity.

Question 27

Is a signature required on delivery?

Accepted Answer

No signature by default. If you need signature-required service for institutional receiving, add a note to your order or contact support before shipping and we'll upgrade the label at cost.

Question 28

How much does shipping cost?

Accepted Answer

Cold-chain shipping is a flat $25 per shipment — this covers the insulated packaging, ice pack, and carrier cold-chain surcharge required to deliver peptides at a stable 2–8 °C. Orders $300 and above ship free. Flat-rate pricing means bundle and multi-pen orders carry the same base — buying more is more economical per pen.

Question 29

What if my shipment arrives warm?

Accepted Answer

Contact support within 24 hours with photos of the package and ice packs. We replace compromised shipments at our cost.

Question 30

What's your return policy?

Accepted Answer

Unopened, refrigerated pens can be returned within 7 days of delivery with cold-chain integrity intact. Opened products are non-returnable. Damaged or compromised shipments are replaced at our cost — report them within 24 hours with photos. Full policy at /legal/returns.

Question 31

How fast are refunds processed?

Accepted Answer

Once a returned shipment is received and the cold-chain integrity verified, refunds are issued within 3–5 business days to the original payment method.

Question 32

My order arrived with one damaged item — do I return everything?

Accepted Answer

No. We replace the damaged item only; the rest of your order stays with you. Send us photos of the damaged unit and the package condition within 24 hours and we ship a replacement on the next business day.

Question 33

Can I cancel a pre-shipment order for a refund?

Accepted Answer

Yes. Any order still showing as 'pending' or 'paid' (not yet marked fulfilled) can be cancelled with a full refund. Once the order is packed and handed to the carrier, the return policy applies.

Question 34

What's a stack?

Accepted Answer

A stack is a curated bundle of 2–4 complementary compounds commonly studied together in a specific research context — for example, our Metabolic Stack with Retatrutide + Cagrilintide + Tesamorelin. Stacks are sold at a bundle price that's lower than the sum of standalone items.

Question 35

Can I swap items inside a stack?

Accepted Answer

Not at the bundle price — each stack is a fixed composition. You can always build a custom set by adding standalone SKUs to your cart; the $/mg and total-mass rollups on the cart panel give you the economics for whatever combination you choose.

Question 36

Do bundle prices update if an individual SKU changes?

Accepted Answer

Bundle prices are set independently, so a standalone price change doesn't automatically reprice the bundle. If a bundle becomes significantly cheaper or more expensive than the sum of its parts after a price update, we adjust the bundle price on our next review.

Question 37

How should I store the pens?

Accepted Answer

Refrigerate 2–8 °C. Do not freeze. Protect from light. Once in use, most pens are stable at room temperature for up to 28 days — check each product's storage notes.

Question 38

How long is the pen stable?

Accepted Answer

Unopened pens stored refrigerated are stable until the printed expiration date. Once in use, the stability window varies by compound (see each product page).

Question 39

What if I accidentally froze a pen?

Accepted Answer

Discard it. Freeze/thaw cycles can disrupt peptide structure in solution, and we can't guarantee purity or potency after freezing. If it happened in transit, contact support with photos and we'll replace it.

Question 40

What payment methods do you accept?

Accepted Answer

Our production payment stack (coming Phase 4) supports card payments via a high-risk merchant processor, cryptocurrency via Coinbase Commerce, and ACH for larger orders. The current checkout reserves orders with status 'pending_payment' and our team follows up with payment instructions.

Question 41

Why don't you use Stripe or PayPal?

Accepted Answer

Research peptides fall into a high-risk category that standard processors decline. Using specialist high-risk processors ensures payment continuity — your orders don't suddenly stop working because of a policy change at a mainstream provider.

Question 42

Is crypto cheaper?

Accepted Answer

Effectively yes. Crypto payments (Coinbase Commerce / BTCPay) carry roughly 1% processing, versus 3.5–5% on high-risk card processing. Larger orders — especially institutional — often prefer ACH for its 1% flat fee and high limits.

Question 43

How do I reach support?

Accepted Answer

Email support@vivaprime.com for general questions or reply directly to any email we've sent you. We respond within 1 business day during US business hours (weekdays, 9am–6pm ET).

Question 44

Do you handle bulk or institutional orders?

Accepted Answer

Yes. For orders above $5,000 or for institutional purchasing (PO-based, net terms, bulk pricing) contact support@vivaprime.com with 'institutional' in the subject line. We'll match you with someone on our team within one business day.

Question 45

What's your return address for physical mail?

Accepted Answer

Our US fulfillment center handles returns — the address is printed on the packing slip inside your shipment.

Frequently asked

For researchers

Compounds & terminology

Research use

Orders & account

Shipping & delivery

Returns & replacements

Bundles & stacks

Storage & handling

Payments

Contact & support