Peptide Referee

Synthro Lab review: is it legit?

Live Transparency score 62/100 Checked Oct 15, 2026. Visit synthrolab.com

Our findings in brief

In short: Synthro Lab scores 62/100, higher than 70% of the 192 active vendors we track. It's #39 on our best peptide vendors list.

We haven't lab-tested anything from Synthro Lab, so this covers public evidence only, not product quality. As of Oct 15, 2026:

What checks out

What's missing or unverified

Across 13 peptides that at least three vendors sell, its best prices are typically 52% above the median (4 of 13 below). Compare its prices.

At a glance

Website
synthrolab.com
Status
Live
Domain registered
Mar 23, 2026 (6 months ago)
Registrar
GoDaddy.com, LLC
Domain expires
Mar 23, 2027
First archived
Apr 14, 2026
Shop platform
WooCommerce
Ships to (stated)
US, Australia
Payment (stated)
Card, Crypto
COAs
Generic COAs only
Research-use disclaimer
Yes
Traffic rank (Tranco)
Outside the top 1 million

Transparency checks

Six checks of public information, worth 100 points. The score measures openness, not product quality. How we score.

CheckWhat we foundPointsEvidence
Domain age Registered Mar 23, 2026 (6 months old) 5/20 Registry record
Public certificates of analysis Only generic or sample COAs are public 12/25 COA page
Independent lab named on COAs No independent lab named 0/10 —
Business identity Company name (Synthro Lab LLC) and address published 15/15 Company name
Shipping, refund and terms pages All three found 15/15 Shipping · Refund · Terms
Card or PayPal payment (buyer protection) Site lists card and crypto 15/15 Card · Crypto

Total: 62/100. All six checks completed.

Synthro Lab prices compared

The lowest price per milligram at Synthro Lab for each peptide, against the median listing across all vendors we track. Rank 1 = cheapest vendor for that peptide.

Peptide Synthro Lab $/mg Median $/mg vs median Price rank
Tirzepatide $1.20/mg $3.46/mg −65% 5th of 22
GHK-Cu $0.898/mg $0.590/mg +52% 76th of 91
BPC-157 $5.39/mg $5.28/mg +2% 49th of 82
Tesamorelin $10.79/mg $6.62/mg +63% 73rd of 78
TB-500 $5.39/mg $6.17/mg −13% 28th of 80
Ipamorelin $3.59/mg $5.42/mg −34% 12th of 77
NAD+ $0.178/mg $0.100/mg +78% 60th of 70
MOTS-c $8.89/mg $3.45/mg +158% 78th of 81
Melanotan II $4.89/mg $3.50/mg +40% 53rd of 60
Epitalon $7.19/mg $3.00/mg +140% 74th of 75
DSIP $7.89/mg $5.10/mg +55% 47th of 64
Pinealon $7.19/mg $3.30/mg +118% 39th of 39
CJC-1295 without DAC (Mod GRF 1-29) $5.39/mg $6.80/mg −21% 19th of 67

Price index: 1.52 (1.00 = market median; lower is cheaper), across 13 peptides sold by 3+ vendors.

All 15 Synthro Lab listings, with sizes and prices
Peptide Product Size Price $/mg vs median Stock Vendor's page
BPC-157 BPC-157 10 mg $54 $5.39/mg +2% In stock View
CJC-1295 without DAC (Mod GRF 1-29) CJC-1295 NO DAC 10 mg $54 $5.39/mg −21% In stock View
DSIP DSIP 10 mg $79 $7.89/mg +55% In stock View
Epitalon Epithalon 10 mg $72 $7.19/mg +140% In stock View
GHK-Cu GHK-CU 50 mg $45 $0.898/mg +52% In stock View
Ipamorelin Ipamorelin 10 mg $36 $3.59/mg −34% In stock View
Melanotan II Melanotan II 10 mg $49 $4.89/mg +40% In stock View
MOTS-c MOTS-C 10 mg $89 $8.89/mg +158% In stock View
NAD+ NAD+ 500 mg $89 $0.178/mg +78% In stock View
Pinealon Pinealon 10 mg $72 $7.19/mg +118% In stock View
TB-500 TB-500 10 mg $54 $5.39/mg −13% In stock View
Tesamorelin Tesamorelin 10 mg $108 $10.79/mg +63% In stock View
Tirzepatide TRZ 60 mg $72 $1.20/mg −65% In stock View
Tirzepatide TRZ 30 mg $54 $1.80/mg −48% In stock View
Tirzepatide TRZ 10 mg $27 $2.69/mg −22% In stock View

Prices come from each vendor's public product feed and were last fetched Oct 15, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. How we compare prices.

Alternatives to Synthro Lab

Live vendors selling the same peptides as Synthro Lab, ranked by transparency score. Payments from vendors never affect this order.

# Vendor Status Transparency Domain age COAs Ships to Prices tracked Lab tests
1 Pure Peptide Labs Live 90/100 12 months Batch COAs public US, worldwide 44 —
2 Peptidology Live 90/100 22 months Batch COAs public US 3 —
3 Eros Peptides Live 87/100 3.4 years Generic COAs only US 14 —
4 Nationwide Peptides Live 85/100 11 months Batch COAs public US 38 —
5 Mile High Compounds Live 85/100 15 months Batch COAs public US, worldwide 2 —

Is something wrong?

If you run Synthro Lab, or you have evidence that something here is out of date, email [email protected] with a link to the evidence. We re-check within five business days and log every change on our corrections page.

Evidence we used (20)