In stock
Coastal Peptides Reviews
Coastal Peptides review: 26 independent lab tests across 5 products, with a mixed lab record, and 21 verified customer reviews.
Written by the Peptide Vendor Reviews editorial team
Is Coastal Peptides legit? Lab record: Mixed
How we rate- 26 independent tests
- 21 of 21 lots filled to label
- Median purity 99.5%
- 3 of 4 products graded D or E
Some of Coastal Peptides's products graded D or E. The shops below tested A or B for the same peptides.
4.5
23 reviews · Excellent
Better-tested BPC-157
Coastal Peptides graded E. Zenith Jove Peptide ZJ's BPC-157 graded A across 10 tests.
Buy from Zenith Jove Peptide ZJAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Coastal Peptides graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
BPC-157
Coastal Peptides: grade ECJC-1295
Coastal Peptides: grade ERetatrutide
Coastal Peptides: grade DCoastal Peptides products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Coastal Peptides' site.
- TirzepatideBGOOD
- Tests
- 5
- Passed
- 80.0%
- RetatrutideDPOOR
- Tests
- 5
- Passed
- 60.0%
- BPC-157EBAD
- Tests
- 5
- Passed
- 40.0%
- CJC-1295EBAD
- Tests
- 5
- Passed
- 40.0%
- Tests
- 6
- Passed
- —
What the testing shows
Across 21 measured samples from Coastal Peptides, 0 came in more than 5% under the quantity on the label (0%). Another 12 measured more than 5% over. Purity across 21 readings ran from 97.22% to 99.98%, median 99.5%. Samples span Feb 2025 to Mar 2025.
- Under label
- 0/21
- Median purity
- 99.5%
- Latest sample
- Mar 2025
- Ships from
- United States
more than 5% short
97.22%–99.98% range
first tested Feb 2025
per vendor listing
Our read on Coastal Peptides
11 of Coastal Peptides' 26 graded samples passed (42%), and 0% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was purity under 99.5% (10 times).
5 samples failed identity, meaning the lab could not confirm the vial held the labelled peptide.
Against the 302 shops with at least five graded tests, Coastal Peptides' pass rate is at or above 10% of them, and it has more tests on record than 60% of them.
On Trustpilot, 21 customer reviews average 4.8 out of 5; the topic customers raise most is shipping and delivery, mentioned in 13 reviews, 100% of them positive.
When and how Coastal Peptides was tested
Samples per month. The darker part of each bar failed.
Feb '25
Mar '25
- Labs used
- TrustPointe (11), Chromate (10), MZ Biolabs (5)
- Who sent the samples
- testing programme 96%
- Batches covered
- No batch numbers on the certificates
Why Coastal Peptides' failed samples failed
The 6 most recent failed tests, with the lab's reason.
Semaglutide · Mar 28, 2025
purity under 99.5%
CJC-1295 No DAC · Mar 20, 2025
purity under 99.5%
Semaglutide · Mar 20, 2025
the lab could not confirm it was the labelled peptide
Semaglutide · Mar 3, 2025
the lab could not confirm it was the labelled peptide
BPC-157 · Mar 3, 2025
purity under 99.5%
BPC-157 · Mar 3, 2025
purity under 99.5%
What Coastal Peptides' customers report
From 21 reviews on Trustpilot, the latest from Oct 1, 2024.
- Shipping and delivery13 mentions
100% of these were 4 or 5 stars
- Product quality9 mentions
100% of these were 4 or 5 stars
- Price and value7 mentions
100% of these were 4 or 5 stars
- Customer service3 mentions
100% of these were 4 or 5 stars
Typical praise · 5★
“Great service- quick delivery- works great with good results”
Most recent · 5★
“I was scared to buy from a new company but my old one stopped selling what I was using. Really glad I found this company.”
Catalog & prices
Every peptide and vial size Coastal Peptides currently sells. Prices refresh weekly.
Sort
Showing 1–4 of 4 productsPrices refreshed weekly · Direct from Coastal Peptides
- In stock
In stock
In stock
Sold out
Lab testing results
Independent results across 5 products.
26
Total lab tests
98.9%
Avg purity
100.0%
Best score
97.2%
Worst score
Individual lab tests
Semaglutide9.8
Date
3/28/2025
Purity
97.821%
Quantity
5 mg → 5.25 mg
Lab
TrustPointe
Vial
White Label / Red Crimp / Clear Cap
Semaglutide
Date
3/20/2025
Purity
—
Quantity
—
Lab
MZ Biolabs
Vial
White Label / Silver Crimp / Grey Cap
CJC-12959.8
Date
3/20/2025
Purity
98.23%
Quantity
10 mg → 10.51 mg
Lab
MZ Biolabs
Vial
White Label / Silver Crimp / Black Cap
Tirzepatide10.0
Date
3/20/2025
Purity
99.89%
Quantity
5 mg → 5.4 mg
Lab
MZ Biolabs
Vial
White Label / Silver Crimp / Blue Cap
Retatrutide10.0
Date
3/20/2025
Purity
99.81%
Quantity
10 mg → 11.09 mg
Lab
MZ Biolabs
Vial
White Label / Silver Crimp / Green Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| SemaglutideWhite Label / Red Crimp / Clear Cap | 3/28/2025 | 9.8 | 97.821% | 5 mg → 5.25 mg | TrustPointe | View |
| SemaglutideWhite Label / Silver Crimp / Grey Cap | 3/20/2025 | — | — | MZ Biolabs | View | |
| CJC-1295White Label / Silver Crimp / Black Cap | 3/20/2025 | 9.8 | 98.23% | 10 mg → 10.51 mg | MZ Biolabs | View |
| TirzepatideWhite Label / Silver Crimp / Blue Cap | 3/20/2025 | 10.0 | 99.89% | 5 mg → 5.4 mg | MZ Biolabs | View |
| RetatrutideWhite Label / Silver Crimp / Green Cap | 3/20/2025 | 10.0 | 99.81% | 10 mg → 11.09 mg | MZ Biolabs | View |
Which Coastal Peptides products tested best
Tirzepatide has the strongest record, graded A or B.
Retatrutide, BPC-157 and CJC-1295 graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Coastal Peptides
If you order from Coastal Peptides, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We track 4 listings from Coastal Peptides with current prices, so you can compare price per mg before you buy.
The official store is coastalpeptides.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Coastal Peptides
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Coastal Peptides: common questions
Is Coastal Peptides legit?
We rate lab records, not businesses. Mixed lab record: 26 independent tests, 21 of 21 lots filled to label, median purity 99.5%, 3 of 4 products graded D or E. Each result links to its original certificate in the table above.
What do Coastal Peptides reviews say?
We hold 21 customer reviews for Coastal Peptides, averaging 4.5 out of 5. Reviews describe service and delivery; the lab results describe what was in the vial.
Which Coastal Peptides peptides tested best?
We have graded 4 Coastal Peptides products. Tirzepatide graded A or B. Retatrutide, BPC-157 and CJC-1295 graded D or E.
Is there a Coastal Peptides promo code?
We don't have a verified Coastal Peptides promo code. A discount changes the price, not what is in the vial, so compare price per mg in the catalog above.
Where does Coastal Peptides ship from?
Public listings place Coastal Peptides's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Coastal Peptides?
Mixed lab record: 26 independent tests, 21 of 21 lots filled to label, median purity 99.5%, 3 of 4 products graded D or E.
About Coastal Peptides
Coastal Peptides is a peptide vendor.
Contact
- United States
- support@coastalpeptides.com
- coastalpeptides.com