Free shipping on orders over $200For laboratory research use only
Research peptide vials under gold lighting

Research-grade peptides

Rigor Sciences.
Research peptides.

High-purity peptides, third-party tested and shipped with a certificate of analysis for every batch.

99%+Purity
24hDispatch
100%Lab tested
01
≥99% HPLC purity

Every batch analytically tested

02
Verified COAs

Third-party certificates per lot

03
Cold-chain packed

Lyophilized & vacuum sealed

04
Fast dispatch

Orders ship within 24 hours

Shop by category

Find your research focus.

The Rigor collection

Featured research peptides.

8 compounds
BPC-157 illustrative research vialBest sellerRIGOR SCIENCES RESEARCH COLLECTION5 mg

Tissue research

BPC-157

Vial size5 mgPurity≥99.1%
$49.00Per vial · Research use only
TB-500 illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION5 mg

Tissue research

TB-500

Vial size5 mgPurity≥99.0%
$59.00Per vial · Research use only
Semaglutide illustrative research vialNew batchRIGOR SCIENCES RESEARCH COLLECTION5 mg

Metabolic research

Semaglutide

Vial size5 mgPurity≥99.3%
$89.00Per vial · Research use only
Tirzepatide illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION10 mg

Metabolic research

Tirzepatide

Vial size10 mgPurity≥99.2%
$119.00Per vial · Research use only
BPC-157 + TB-500 Blend illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION10 mg

Research blends

BPC-157 + TB-500 Blend

Vial size10 mgPurity≥99.0%
$99.00Per vial · Research use only
GHK-Cu illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION50 mg

Cellular research

GHK-Cu

Vial size50 mgPurity≥99.0%
$45.00Per vial · Research use only
Ipamorelin illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION5 mg

Cellular research

Ipamorelin

Vial size5 mgPurity≥99.1%
$39.00Per vial · Research use only
Bacteriostatic Water illustrative research vialRIGOR SCIENCES RESEARCH COLLECTION10 ml

Lab supplies

Bacteriostatic Water

Vial size10 mlPuritySterile
$12.00Per vial · Research use only
Illustrative analytical laboratory with research vialsPrecision at every step.

About Rigor Sciences

Research begins
with rigor.

We believe researchers deserve clarity in every compound they work with. Rigor Sciences brings a focused collection of peptides and laboratory essentials to your research.

Our approach is simple: a commitment to precision, transparent information, and the science behind every product.

The science behind the vial

Clarity in every
certificate.

Batch-specific certificates of analysis will be available here once supplied.

01

Identity

Compound identification

02

Purity

Analytical purity data

03

Batch

Lot-specific documentation

04

Analysis

Testing method & results

Frequently asked questions

A little more clarity.

All products are intended strictly for in-vitro laboratory research, not for human or veterinary use.