Synthro Lab
synthrolab.comEvidence Score 46/100 (Moderate evidence) · we could read 100% of the site · last checked October 9, 2026
Lab reports published: 15 · Lab-validated: 2 (matched to the issuing lab's own public record)
As of October 9, 2026, Synthro Lab publishes a lab-results page, names Freedom Diagnostics and accepts card payments.
Synthro Lab review: what PepAssess found
As of October 9, 2026, Synthro Lab has a PepAssess Evidence Score of 46/100 (moderate evidence). It publishes 15 lab reports; 2 are confirmed in the issuing labs' own records (Freedom Diagnostics), and the newest report is dated July 3, 2026. Its site shows no company name or street address. It takes card payments, which let you dispute a charge.
What the Evidence Score means
It adds up points for what we could verify about Synthro Lab: lab reports we matched to the issuing lab's own public record (the biggest part), how often it tests, what the reports cover, contact details, policies, card payments and how long the site has existed. Each card below shows exactly which checks it passed. A higher score means more you can verify yourself; it is not a safety rating, and ads or affiliate deals never change it. Full method ›
Lab transparency (reports validated with the lab)
15/40- ✓ 1 lab report validated with the issuing lab's own public record+5
- ✓ 2 validated lab reports+5
- – 3 validated lab reports0
- – 4 or more validated lab reports0
- ✓ Endotoxin tested: 1 lab-validated endotoxin report (1)+5
- – Endotoxin tested: 3 or more lab-validated endotoxin reports (1)0
- – Validation experience: 47+ validated reports (top quarter of vendors with any)0
Testing frequency
13/16- ✓ Newest lab report within the last 12 months+2
- ✓ Newest lab report within the last 6 months+3
- – Newest lab report within the last 90 days0
- ✓ New lab reports in 3+ different months of the last year+4
- ✓ New lab reports in 6+ different months of the last year+4
Report details
2/5- ✓ Reports carry lot / batch numbers+1
- ✓ Most reports carry lot / batch numbers+1
- – Identity (mass spec) and purity (HPLC) tested0
- – Sterility and endotoxin tested0
Business transparency
6/19- – Legal business name disclosed0
- – Real street address (not a mailbox or registered agent)0
- ✓ Contact email published+2
- – Phone number published0
- ✓ Refund / return policy page+2
- ✓ Shipping policy page+2
Buyer protection
10/10- ✓ Card payments (chargeback recourse)+8
- ✓ Research-use labeling present+2
Track record
0/10- – Website registered 1+ years ago0
- – Website registered 2+ years ago0
Quick facts
- Lab-results page
- synthrolab.com/coa/
- Testing labs (on its lab reports and site)
- Freedom Diagnostics
- Research-use labeling
- Present
- Payment methods
- crypto, paypal, card, ach/bank, cashapp, zelle
- Store platform
- WooCommerce
- Products listed
- 30
- Company
- Not published
- Address
- Not published
- info@synthrolab.com, mitch@synthrolab.com, support@synthrolab.com
- Phone
- Not published
- Contact page
- synthrolab.com/contact/
- Refund policy
- synthrolab.com/refund_returns/
- Shipping policy
- synthrolab.com/shipping-policy/
- Website registered
- Not published by registry
- Also listed by other directories
- 0 (not scored)
Lab-validated reports (2)
Each report below was matched to the issuing lab's own public record. “Lab's copy” opens it on the lab's site; “Vendor's copy” is the file on Synthro Lab's site. Copies of the same report count once.
- Freedom Diagnostics · Whol2606100093Lab's copy ↗ · Vendor's copy ↗ · checked October 8, 2026
- Freedom Diagnostics · Whol2607010298Lab's copy ↗ · Vendor's copy ↗ · checked October 8, 2026
People are talking about this
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Affiliate & discount information
This vendor runs an affiliate program (affiliate.synthrolab.com/). Affiliate status is shown for transparency and is never part of the score.
Synthro Lab: questions people ask
Is Synthro Lab legit?
PepAssess doesn't vouch for any seller; it shows what each one documents. As of October 9, 2026, Synthro Lab (synthrolab.com) has: Evidence Score 46/100, 2 lab reports confirmed by the issuing labs' own records and no FDA warning letter found. Synthro Lab's full PepAssess profile
What do reviews say about Synthro Lab?
PepAssess's review of Synthro Lab is built from what it checked, not from opinions. As of October 9, 2026, Synthro Lab has a PepAssess Evidence Score of 46/100 (moderate evidence). It publishes 15 lab reports; 2 are confirmed in the issuing labs' own records (Freedom Diagnostics), and the newest report is dated July 3, 2026. Its site shows no company name or street address. It takes card payments, which let you dispute a charge. PepAssess hasn't linked customer reviews for Synthro Lab yet. Synthro Lab review on PepAssess
Does Synthro Lab test its peptides?
Yes. Synthro Lab publishes 15 lab reports from Freedom Diagnostics, and PepAssess matched 2 of them to the issuing lab's own public records (as of October 9, 2026). The newest report PepAssess read is dated July 3, 2026. See the lab-confirmed reports
Which labs test Synthro Lab's peptides?
Freedom Diagnostics, as named on Synthro Lab's lab reports and website (as of October 9, 2026). About these labs and how to check their reports
How do I contact Synthro Lab?
Email: info@synthrolab.com, mitch@synthrolab.com. As published on synthrolab.com (checked October 9, 2026).
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Sources
Collected by PepAssess directly from synthrolab.com on October 9, 2026 (homepage and linked contact, policy, lab-results and affiliate pages). Scoring method: methodology v0. Something wrong? Claim this profile to submit corrections.