Two vetted vendors, and both are good options. Lost Coast Aminos scores 9.5/10 and Petratide Science 9/10. Lost Coast is cheaper on 9 of 11 shared compounds before its 10% code and 10 of 11 after, with one standard amount costing $219.36 against $321.10 after codes, while Petratide holds more COAs (164 against 60) and is 86% cheaper on GHK-Cu. Pick Lost Coast Aminos for the lower basket and wider catalog; pick Petratide Science for GHK-Cu.
Key takeaways
- Price: Lost Coast Aminos is lower on 9 of 11 shared compounds before its code and 10 of 11 after; one standard amount of every comparable compound costs $321.10 against $219.36 after codes.
- COAs: Petratide Science holds 164 COA records against 60 at Lost Coast Aminos.
- Reviews: Lost Coast Aminos shows 4.7/5 on Trustpilot from 37 reviews; Petratide Science shows 4.2/5 from 41.
- Shipping: Petratide Science ships free above $200, with processing of 24 to 36 hours; Lost Coast Aminos quoted $15 for FedEx two-day delivery. Both ship to the United States.
- Codes: Lost Coast Aminos' peptideprices takes 10% off and auto-applies through the referral link. Petratide Science has no PeptidePrices code.
- Pick by priority: Lost Coast Aminos for the lower basket, wider catalog and 9.5/10 score; Petratide Science for GHK-Cu (86% cheaper, $0.35 against $2.40 per 10 mg), AHK-Cu, GLOW or IGF-1 LR3.
In this article
Petratide Science and Lost Coast Aminos by the numbers
| Petratide Science | Lost Coast Aminos | |
|---|---|---|
| PeptidePrices score | 9/10 | 9.5/10 |
| Factor scores | COA 10, reputation 8.5, transparency 7.5, operations 9.5 | COA 10, reputation 8.5, transparency 9, operations 9 |
| COA quality | 10/10, COA verified | 10/10, COA verified |
| COA library records | 164 | 60 |
| In-stock listings with an exact issuer-verified certificate | 15 of 18 | 36 of 43 |
| In-stock listings / distinct compounds | 18 / 14 | 43 / 33 |
| Reader code | None | peptideprices (10% off) |
| Ships to | United States | United States |
| Payment | Credit/debit cards, Apple Pay, Google Pay, Same-Day Bank Payment, Zelle | Credit/debit card, Zelle, Cash App |
| Location and founding | United States, street address not disclosed, 2025 | California, United States, 2025 |
| Trustpilot | 4.2/5 (41 reviews) | 4.7/5 (37 reviews) |
Six shared compounds, and where the 10% code changes the answer
The catalogs share 11 in-stock compounds, and all 11 normalize to a standard research amount on both sides. These six carry the decisions. Package prices are each vendor's cheapest in-stock option, and per-standard figures divide price by vial milligrams and scale to the compound's standard amount.
BPC-157
Petratide's 5 mg is $31.45 and its 10 mg is $40.45, or $40.45 per 10 mg. Lost Coast's 10 mg is $40.00 and its 20 mg is $52.50, or $26.25 per 10 mg, which is 35% less before the code and $23.63 after it. Lost Coast names its 10 mg BPC-157 among six exact certificate gaps. Petratide's published exceptions name ARA-290, two 1 g raw-powder offers and VIP, not BPC-157.
GHK-Cu
Petratide sells 50 mg at $26.95, 100 mg at $35.95 and 1000 mg at $34.60, which normalizes to $0.35 per 10 mg. Lost Coast sells 100 mg at $24.00, or $2.40 per 10 mg. Petratide is 86% cheaper before the code and remains cheaper after it, $0.35 against $2.16. The archive attaches an exception to Petratide's 1 g raw powder: the matched reports print a nominal 1 mg with 1.03 mg and 1.06 mg measured content, so those offers receive no exact 1 g product certificate. The 100 mg GHK-Cu Freedom Search Code also has no exact entry in the public index.
GLP-1S
Both vendors list one 10 mg package. Petratide prices it at $26.95 and Lost Coast at $24.00, 11% less before the code and $21.60 after it. Neither published exception list names GLP-1S. The listing-level counts still differ: 15 of 18 at Petratide and 36 of 43 at Lost Coast carry an exact issuer-verified certificate.
KPV
Petratide's 10 mg is $40.45. Lost Coast's is $27.00, 33% less before the code and $24.30 after it. Petratide's June 10 KPV report states 2.585 EU/mL endotoxin. The vendor summary applies a ≤5 EU/mL specification, and the current official PDF reports the same value without a pass/fail threshold.
Pinealon
Petratide's 10 mg is $29.65. Lost Coast's 18 mg is $39.00, or $21.67 per 10 mg, 27% less before the code and $19.50 after it. Petratide's archive states 96.44% purity for Pinealon, inside a range of 96.05% to 99.98%. Lost Coast's 18 mg Pinealon is one of its six exact certificate gaps.
Wolverine
Petratide's 20 mg is $49.45, or $24.73 per 10 mg. Lost Coast's 20 mg is $53.00, or $26.50 per 10 mg. Petratide is 7% cheaper before the code, one of its two wins on the shared set. After Lost Coast's 10% code the order flips, $24.73 against $23.85. Neither published exception list names this stack.
The rest of the price picture: $321.10 against $219.36
The table below is the full shared-compound record, including the six above. It uses the cheapest in-stock package at each vendor and the same normalization.
| Compound | Petratide Science packages | Lost Coast Aminos packages | Petratide Science per std. | Lost Coast Aminos per std. | Lower before code | Lower after code |
|---|---|---|---|---|---|---|
| ARA-290 (Cibinetide) | 10mg $49.45 | 30mg $59.00 | $49.45/10mg | $19.67/10mg | Lost Coast Aminos (60% less) | Lost Coast Aminos |
| BPC-157 | 5mg $31.45; 10mg $40.45 | 10mg $40.00; 20mg $52.50 | $40.45/10mg | $26.25/10mg | Lost Coast Aminos (35% less) | Lost Coast Aminos |
| CJC-1295 No DAC + Ipamorelin | 10mg $40.45 | 10mg $35.00 | $40.45/10mg | $35.00/10mg | Lost Coast Aminos (13% less) | Lost Coast Aminos |
| GHK-Cu (Copper Peptide) | 50mg $26.95; 100mg $35.95; 1000mg $34.60 | 100mg $24.00 | $0.35/10mg | $2.40/10mg | Petratide Science (86% less) | Petratide Science |
| Ipamorelin | 10mg $31.45 | 10mg $29.00 | $31.45/10mg | $29.00/10mg | Lost Coast Aminos (8% less) | Lost Coast Aminos |
| KLOW Protocol | 80mg $67.45 | 80mg $50.00 | $8.43/10mg | $6.25/10mg | Lost Coast Aminos (26% less) | Lost Coast Aminos |
| KPV | 10mg $40.45 | 10mg $27.00 | $40.45/10mg | $27.00/10mg | Lost Coast Aminos (33% less) | Lost Coast Aminos |
| Pinealon | 10mg $29.65 | 18mg $39.00 | $29.65/10mg | $21.67/10mg | Lost Coast Aminos (27% less) | Lost Coast Aminos |
| GLP-1S | 10mg $26.95 | 10mg $24.00 | $26.95/10mg | $24.00/10mg | Lost Coast Aminos (11% less) | Lost Coast Aminos |
| Snap-8 | 10mg $28.75 | 10mg $26.00 | $28.75/10mg | $26.00/10mg | Lost Coast Aminos (10% less) | Lost Coast Aminos |
| Wolverine | 20mg $49.45 | 20mg $53.00 | $24.73/10mg | $26.50/10mg | Petratide Science (7% less) | Lost Coast Aminos |
Lost Coast is lower on 9 compounds before codes and Petratide on 2. After Lost Coast's code the split is 10 to 1. A basket holding one standard amount of every comparable compound comes to $321.10 at Petratide and $243.73 at Lost Coast before codes, then $321.10 against $219.36 after. Petratide's figure does not move because there is no code to apply.
Catalog breadth runs the other way. Petratide's 18 listings cover 14 compounds. Lost Coast's 43 listings cover 33. Three compounds are only at Petratide: AHK-Cu, GLOW and IGF-1 LR3. Twenty-two are only at Lost Coast: 5-Amino-1MQ, Adamax, CJC-1295 (With DAC), Cagrilintide, Cartalax, DSIP, Epithalon, Glutathione, Kisspeptin-10, MOTS-c, Melanotan-1 (MT-1), NAD+, PT-141 (Bremelanotide), GLP-3R, SLU-PP-332, SS-31, Selank, Semax, Sermorelin, Tesamorelin, Thymosin Alpha-1 and GLP-2T.
Certificates: 164 records at Petratide Science, 60 at Lost Coast Aminos
A certificate counts in these totals only when PeptidePrices matched it to the exact vendor, compound, strength and lot of a live listing and confirmed the issuing laboratory's record. The method is published on the trust page, and the retained files sit in the COA library.
Petratide Science retains 164 unique report sets across 165 vendor files: 130 ILS Laboratories reports and 34 Freedom Diagnostics reports. 162 match specific official laboratory records. Two Freedom files remain available without an exact issuer match, and two SLU-PP-332 images reproduce one report and lot, so they count as one set. 160 of the 164 reports state numerical purity from 96.05% to 99.98%. Pinealon reports 96.44%, the LM Bottle mixture holds the low value of 96.05%, and three water reports plus Lipo-FB omit a numerical result. On the ILS side, identity appears on all 130 reports, purity on 126, measured content on 123, endotoxin on 112, PCR microbial screening on 109 and metals on 109. PCR screening is not culture-based sterility. Printed analysis dates run December 19, 2025 to October 15, 2026, and the newest matched listing certificate was analyzed October 9, 2026.
Petratide publishes its exceptions. The AHK-Cu and GHK-Cu raw-powder offers are labelled 1 g, but their matched reports print a nominal 1 mg with 1.03 mg and 1.06 mg measured content. They receive no exact 1 g product certificate. The June 10 KPV and Ipamorelin reports state 2.585 and 2.01 EU/mL endotoxin, the vendor summaries apply a ≤5 EU/mL specification, and the current official PDFs report the same values without a pass/fail threshold. VIP's 5 mg archive card links a report labelled 10 mg with 4.01 mg measured content. ARA-290 has no exact report. Two Freedom Search Codes, GHK-Cu 100 mg and that VIP record, have no exact entry in the public index.
Lost Coast's review covered all 60 retained reports on September 3, 2026. 52 matched exact issuer records, including Kovera KVR-2026-F286CE and KVR-2026-5F6994. Eight additional vendor-hosted reports had an unavailable public lookup during review, and PeptidePrices keeps them as lookup-unavailable rather than counting a portal outage as a failed test. Fifty-seven reports name Lost Coast as client. Three name VeriPure LLC or Verified Scientific LLC, remain visible with unresolved attribution, and are excluded from Lost Coast's verified counts. The strongest current Kovera panels include identity, purity, content, endotoxin, sterility, heavy metals and multi-vial conformity. At the listing level, 36 of 43 in-stock listings carry an exact issuer-verified certificate, and the newest matched analysis date is September 23, 2026. Six exact gaps remain: BPC-157 10mg, GLOW 70mg, Melanotan-1 10mg, Pinealon 18mg, PT-141 11mg and Thymosin Alpha-1 12mg. Matched listings name Kovera Labs and Freedom Diagnostics.
The customer record sits apart from the laboratory record. Petratide's 4.2/5 from 41 reviews breaks into 34 five-star and seven one-star ratings; negative accounts include unresolved delivery complaints and product-quality allegations, and the customer testing allegation supplies no underlying laboratory file. Lost Coast's 4.7/5 from 37 reviews repeatedly credits Bill, identified in the public review record as the owner and support contact, with responsiveness and help resolving a payment problem. Petratide's current terms name Petratide Science LLC but publish no street address, owner or scientific team, and a Woodlands, Texas address appeared in the August review but is absent from current policies. Lost Coast publishes no surname, legal entity or street address. Both domains were registered in October 2025.
One code, one vendor: peptideprices at Lost Coast Aminos
Lost Coast carries a PeptidePrices reader code. The code is peptideprices, it takes 10% off, and the offer is verified by PeptidePrices. It was last checked on October 3, 2026 and auto-applies through the referral link. Terms and checkout steps are on the Lost Coast Aminos coupon page.
Petratide Science has no PeptidePrices code. Nothing is applied at checkout, and none of the after-code figures in this post move for Petratide. The practical effect is the after-code split: Lost Coast leads 10 to 1 rather than 9 to 2.
Shipping and payment: $14.95 FedEx against $15 two-day
Petratide Science. Ships to the United States. Standard shipping is free above $200. Processing takes 24 to 36 hours and transit runs 2 to 7+ business days. The inspected FedEx option is $14.95 plus a mandatory $4.95 Guaranteed Delivery charge, billed once per order, and payment-specific fees can change the displayed total. Sales are final after fulfillment. Damaged, incorrect or lost shipments must be reported within 24 hours with photos, and approved claims receive reshipment or store credit. Checkout takes credit and debit cards, Apple Pay, Google Pay, Same-Day Bank Payment and Zelle.
Lost Coast Aminos. Ships to the United States, and destinations beyond it were not verified. Paid orders normally process in one to three business days. Checkout showed optional $3 shipping protection and $15 FedEx two-day delivery. Payment is by credit or debit card, Zelle or Cash App, and the reader coupon auto-applies through the referral link. Sales are final. The dedicated return policy asks for written notice within 24 hours for a damaged, defective or incorrect item, while other site terms use 48 hours.
Who should pick Petratide Science, and who should pick Lost Coast Aminos
Choose Petratide Science if GHK-Cu is on your list. The 1000 mg package normalizes to $0.35 per 10 mg against $2.40 at Lost Coast, an 86% gap that the 10% code does not close. The same buyer fits anyone who needs AHK-Cu, GLOW or IGF-1 LR3, which Lost Coast does not stock, or who wants Apple Pay, Google Pay or Same-Day Bank Payment at checkout. The trade-offs are a 14-compound catalog, a 7.5/10 transparency score, no published street address and no reader code.
Choose Lost Coast Aminos if you want the wider catalog and the lower basket. It covers 33 compounds, including GLP-3R, GLP-2T, CJC-1295 with DAC, NAD+, SS-31, Selank and Semax, and it is lower on 9 of 11 shared compounds before the code. The code brings one standard amount of every shared compound to $219.36 against $321.10. It also carries the higher score, 9.5/10 against 9/10, and the stronger Trustpilot figure, 4.7/5 from 37 reviews against 4.2/5 from 41.
Choose neither for delivery outside the United States. Both list the United States as the destination, and Lost Coast's terms beyond that were not verified.
Check the exact certificate either way. Petratide's exceptions sit on the 1 g raw powders, VIP and ARA-290. Lost Coast's six gaps sit on named strengths, including BPC-157 10mg and Pinealon 18mg. Full evidence: Petratide Science review and Lost Coast Aminos review.
PeptidePrices has affiliate relationships with some vendors. Affiliate status carries no weight in our scores, and neither vendor can edit or approve this comparison.
Petratide Science vs Lost Coast Aminos: frequently asked questions
Is Petratide Science or Lost Coast Aminos cheaper?
Lost Coast Aminos is lower on 9 of 11 shared compounds before its 10% code and 10 of 11 after it. One standard amount of each comparable compound costs $321.10 at Petratide Science and $219.36 at Lost Coast after codes.
Does Petratide Science have a PeptidePrices code?
No. Petratide Science has no PeptidePrices reader code. Lost Coast Aminos has one, peptideprices for 10% off, verified and auto-applied through the referral link.
Which vendor has more COA records?
Petratide Science, with 164 library records against 60 at Lost Coast Aminos. At the listing level, 15 of 18 Petratide listings and 36 of 43 Lost Coast listings carry an exact issuer-verified certificate.
Which laboratories tested the two archives?
Petratide's 164 sets comprise 130 ILS Laboratories reports and 34 Freedom Diagnostics reports. Lost Coast's reviewed corpus matched Kovera records including KVR-2026-F286CE and KVR-2026-5F6994, and its matched listings name Kovera Labs and Freedom Diagnostics.
Can I buy GLP-3R or GLP-2T from Petratide Science?
No. Both appear only at Lost Coast Aminos. Petratide Science's 14 in-stock compounds include GLP-1S but not GLP-3R or GLP-2T.
Do both vendors ship outside the United States?
Neither publishes international service. Petratide Science ships to the United States. Lost Coast Aminos lists the United States, and destinations beyond it were not verified.
Which vendor has the higher PeptidePrices score?
Lost Coast Aminos at 9.5/10, against 9/10 for Petratide Science. COA practices are 10/10 at both and reputation is 8.5/10 at both; transparency is 9 at Lost Coast against 7.5, and operations is 9.5 at Petratide against 9 at Lost Coast.