Peptide Comparisons: Every Side-by-Side Guide

This page lists every peptide comparison on ExoLabz USA, so you can find the one that answers your ordering question and go straight to it. The first three are buying guides with decision tables and cost-per-milligram math. The rest are deeper articles on structure and analysis that the buying guides link to.

Each summary below tells you what the comparison helps you decide. All products are research-use-only, 99%+ purity, and ship within the US from Utah, with free shipping over $200.

Start with a buying guide if you are choosing what to order

• BPC-157 vs TB-500 — Helps you choose between the two single peptides and the 10mg and 20mg blends. It includes a decision table by study type, the molar ratio inside a 1:1 blend, and when the blend saves money over two singles.
• Sermorelin vs Tesamorelin vs CJC-1295 — Compares three GHRH-receptor agonists by chain length, modification and cost per micromole. It also explains when the CJC-1295 and ipamorelin blend is the right order instead.
• GLOW vs KLOW — Both blends are the same price, so this guide focuses on whether the extra 10mg of KPV in KLOW suits your design or confounds it. It also compares each blend against buying the components separately.

Go deeper before choosing between related compounds

• Thymosin β4 vs the TB-500 fragment — Explains why the seven-residue acetylated fragment is not the 43-residue protein. Read it before ordering TB-500 against a literature base built on full-length thymosin β4.
• CJC-1295 with DAC vs without DAC — Sets out what the drug affinity complex adds chemically and why the no-DAC form is a different reagent. Useful when your sources do not say which version they used.
• GHRH analogs vs growth hormone secretagogues — Separates the GHRH-receptor family from the ghrelin-receptor (GHS-R1a) family at receptor level. It is the background for deciding between a single analog and a two-receptor blend.
• GHRP-2 vs GHRP-6 — Compares the two hexapeptides by sequence and molar mass, which is what you need to confirm identity when both are on the bench.
• Hexarelin vs GHRP-6 — Focuses on the single methyl group that separates the two, and how that small mass shift shows up in analysis.

Compare peptides outside the growth-factor and GHRH groups

• Selank vs Semax — Traces each back to its endogenous parent peptide, tuftsin and an ACTH fragment respectively, and compares the stabilizing Pro-Gly-Pro extension they share. A good starting point before ordering either Selank or Semax.
• MOTS-c vs SS-31 — Contrasts a mitochondria-derived 16-residue peptide with a synthetic tetrapeptide that targets cardiolipin. The two are often grouped together but are very different molecules.
• Melanotan 1 vs Melanotan 2 vs PT-141 — Compares the linear and cyclic melanocortin analogs by structure. It explains why PT-141 and Melanotan 2 are so close in sequence yet sold as separate compounds.

Use the tools that sit behind every comparison

Every comparison on this site rests on the same few checks. Price is compared per milligram, and per micromole where molar amount matters, as explained in how to compare research peptide prices per milligram. Identity is confirmed against a certificate, covered in how to read a peptide certificate of analysis. Our products are third-party tested with HPLC and purity testing. Some certificates are posted on the COAs page, and each vial is matched to its certificate by cap and crimp color. To set up equimolar stock solutions for a side-by-side run, use the peptide concentration calculator.

Ready to order? Browse the full catalog or check the US research peptide price list. Orders are dispatched within one business day and usually arrive in two to five days.

All products are for laboratory research use only. Not for human or veterinary use.