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Sparta Labs Coupon Code: PROFPEPTIDE — Save 15%

Use discount code PROFPEPTIDE at Sparta Labs to save 15% on your order. Prof. Peptide confirmed this rate on October 13, 2026.

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COAs available upon request
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Key facts

Catalog
Lyophilized powder in vials
Third-party testing
Certificates of analysis published
Certificates of analysis
No certificate is published. The vendor's Lab Results page is a request form rather than a library, and no testing laboratory is named anywhere on the site
Prof. Peptide’s discount
15% off with code PROFPEPTIDE
Sparta Labs logo

Sparta Labs (spartalabs.net) is a US research-peptide supplier, trading as Sparta Labs, LLC on its own Research Use Policy. It is a different business from Spartan Peptides, which Prof. Peptide also lists: a different domain, a different company name and a different discount rate. Prices are public, with no login wall.

The catalog runs to 38 product pages by the vendor's own sitemap, sorted into two categories of its own naming — peptides and blends — and supplied as lyophilized powder in vials, most listings offering several sizes. Sparta publishes two larger figures elsewhere on its site: an affiliate page citing 148 lab-tested products and a wholesale block citing 70+ compounds. Neither matches the 38 pages the site itself lists, so the sitemap count is the one used here.

Metabolic & GLP-1
Semaglutide (GLP-1 SG), Tirzepatide (GLP-2 TZ), Retatrutide (GLP-3 RT), Cagrilintide, Mazdutide, MOTS-c, AOD-9604
Recovery & Tissue Repair
BPC-157, TB-500, Wolverine Stack
Performance & Energy
IGF-1 LR3
Growth Hormone
CJC-1295 (with and without DAC), Ipamorelin, Sermorelin, Tesamorelin, GHRP-2, GHRP-6, Hexarelin
Cognitive & Nootropic
Semax, Selank, N-acetyl variants of both, DSIP
Skin Health & Anti-Aging
GHK-Cu, KLOW, Melanotan II, Glutathione
Gut Health & Immunity
KPV, Thymosin Alpha-1
Longevity
Epitalon, NAD+, SS-31, Pinealon
Sexual Health
PT-141, Kisspeptin-10, Oxytocin

Sparta sells tirzepatide as GLP-2 (TZ) (Sparta states that it is a synthetic GIP/GLP-1 dual receptor agonist), retatrutide as GLP-3 (RT) (stated to be a GIPR/GLP-1R/GCGR triple receptor agonist) and semaglutide as GLP-1 (SG) (stated to be a synthetic long-acting GLP-1 receptor agonist). Those three listings carry no CAS number, molecular formula or PubChem CID, unlike the rest of the catalog, and no certificate confirms any of them, because Sparta publishes none.

The testing picture is the part worth reading closely, and it is the weakest of any vendor listed here. Sparta states that every batch is independently tested to ≥99% purity by HPLC, with mass spectrometry for identity, LAL endotoxin testing and sterility verification. It names no laboratory anywhere on its site, and it publishes no certificate. The Lab Results page, which the rest of the site points to as the certificate library, is a request form: it asks for an order number or product name and states that the full Certificate of Analysis for that batch will be forwarded.

That was checked twice over, on 29 September 2026: in the rendered pages, and in the Lab Results page's own underlying data payload rather than only the text a browser shows. Neither contains a certificate file, a certificate image or a laboratory name. So there is no report number to look up, and no laboratory portal to look one up in — not a gate Prof. Peptide declined to pass, but an absence. Zero certificates have been verified for this vendor, and the ≥99% figure on every product page rests on the vendor's word alone.

The site says otherwise in three places. Its About page states that every COA is publicly available; the homepage FAQ invites a reader to browse published COAs in the Lab Results library; the affiliate page describes the store as one with published COAs. The library publishes none.

Shipping, returns and public pricing

Sparta ships to the United States only, and says so twice: its shipping policy states that it does not ship outside the United States, and its affiliate agreement states that it sells research-use-only materials in the United States only. The storefront carries a /us/ path in its address, and every other regional path Prof. Peptide tried redirects back to it. Orders go by FedEx or USPS, dispatched typically within one business day and the same day when placed before 4pm Eastern Monday to Saturday, with an estimated 2–5 business days in transit; nothing dispatches on Sundays or US federal holidays. Shipping charges are calculated at checkout from package weight and destination, and the store banner advertises cold-chain dispatch within 24 hours; title and risk of loss pass to the buyer when the carrier takes possession. Buyers must be 21 or older. Refunds and returns sit in a separate published refund policy, and a 30-day guarantee states that an order is refunded or replaced if the certificate does not match the batch or purity falls below 99%. Public discounts need no code: bulk tiers of 5% at three vials and 10% at six, a military discount, a rewards programme, and a site-wide buy-one-get-one banner that was running when this page was written.

Sparta Labs affiliate program

Sparta Labs runs an affiliate program. Its terms below are from the program’s published terms, read by Prof. Peptide October 6, 2026.

Commission
15% of the order subtotal (before discounts, tax and shipping) from the first order, rising with cumulative referred sales: 18% from $5,000 (Silver), 20% from $20,000 (Gold), 25% from $50,000 (Platinum), 30% from $100,000 (Diamond) and 35% from $200,000 (Elite); the rate never drops once earned, and every later order from a referred customer is commissioned at the current rate
Tracking window
30 days, last click
Payouts
ACH, Zelle, Venmo, Cash App or crypto (BTC, ETH, USDC), paid weekly
Minimum payout
$50

Prof. Peptide earns a commission if you join through this link.

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Prof. Peptide checked Trustpilot and Finnrick on 30 September 2026. Trustpilot: 4.1 from 9 reviews (read 30 September 2026).

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Frequently Asked Questions

Does Sparta Labs have a coupon code?
Yes. Use code PROFPEPTIDE at checkout to save 15% on a Sparta Labs order. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
Is Sparta Labs third-party tested?
The vendor states that every batch is tested by an independent laboratory to ≥99% purity by HPLC, and that mass spectrometry, LAL endotoxin and sterility testing are also run. It names no laboratory anywhere on its site and publishes no certificate, so none of those statements can be checked against a document. The Lab Results page is a request form, not a library: it asks for an order number or product name and states that the certificate for that batch will be forwarded.
Have any Sparta Labs certificates been verified?
None, because none is published. Prof. Peptide read the Lab Results page, the About page and a product page on 29 September 2026, and also the Lab Results page's underlying data payload rather than only its rendered text: there are no certificate files, no certificate images and no laboratory name in any of them. There is therefore no report number to look up and no laboratory portal to look it up in. This is different from a vendor whose certificates sit behind a login — there is nothing to open.
Does Sparta Labs say its certificates are public?
In three places, yes, and the Lab Results page is where that claim resolves. The About page states that every COA is publicly available; the homepage FAQ invites a reader to browse published COAs in the Lab Results library; the affiliate page describes the store as having published COAs. The library publishes none.
What does Sparta Labs sell?
Its own sitemap lists 38 product pages, supplied as lyophilized powder in vials in several sizes each. The incretin line is sold under coded names — GLP-1 (SG), GLP-2 (TZ) and GLP-3 (RT) — which Prof. Peptide decodes as semaglutide, tirzepatide and retatrutide from the vendor's own descriptions of each one's receptor mechanism, corroborated by the letters in the codes. Those three listings carry no CAS number, unlike the rest of the catalog, and no certificate confirms any of them, because Sparta publishes none.
Where does Sparta Labs ship?
The United States only. Its shipping policy states that it does not ship outside the United States, and its affiliate agreement states that it sells research-use-only materials in the United States only. Orders go by FedEx or USPS, typically dispatched within one business day, with an estimated 2–5 business days in transit; there is no dispatch on Sundays or US federal holidays. Sparta Labs states that shipping charges are calculated at checkout from package weight and destination, that orders go out by FedEx or USPS, and that domestic delivery is estimated at 2–5 business days after dispatch. Title and risk of loss pass to the buyer when the carrier takes possession. Buyers must be 21 or older.
Are there public discounts at Sparta Labs?
Yes, and they need no code. The store publishes bulk tiers of 5% at three vials and 10% at six, a military discount page, and a rewards programme; a site-wide buy-one-get-one banner was running when Prof. Peptide read the site on 29 September 2026. A 30-day guarantee is also published: the vendor states it will refund or replace an order if the certificate does not match the batch or purity falls below 99%. Prof. Peptide has not tested whether any of these combine with the discount code above.

Affiliate disclosure: Prof. Peptide is independently operated and may earn affiliate commissions when you use our discount codes or buy through our links, at no additional cost to you. Affiliate relationships never determine vendor inclusion, ranking, verification, or our editorial conclusions.