Quick research-only answers to the questions we get most about tirzepatide (GLP-2TZ), retatrutide (GLP-3RT), semaglutide (GLP-1SG), BPC-157, GHK-Cu, MOTS-c, and the rest of the ARG Peptides research catalog.
What is GLP-3RT?
GLP-3RT is a synthetic 39-amino-acid research peptide engineered as a triple agonist of the GLP-1, GIP, and glucagon receptors. It is the same compound discussed in the literature as retatrutide. Read the full GLP-3RT research guide.
What is GLP-2TZ?
GLP-2TZ is a synthetic 39-amino-acid research peptide acting as a dual agonist of the GLP-1 and GIP receptors. It is the same compound referenced in scientific literature as tirzepatide. Read the full GLP-2TZ research guide.
What is GLP-1SG?
GLP-1SG is a long-acting GLP-1 receptor agonist research peptide, commonly known as semaglutide. It engages only the GLP-1 receptor, making it the single-agonist reference compound in the incretin research family.
What is the difference between tirzepatide and retatrutide?
Tirzepatide (GLP-2TZ) is a dual agonist (GLP-1 + GIP). Retatrutide (GLP-3RT) is a triple agonist (GLP-1 + GIP + glucagon). The difference is the addition of the glucagon receptor in the triple-agonist molecule. See our Tirzepatide vs Retatrutide research comparison for details.
What is BPC-157?
BPC-157 is a synthetic pentadecapeptide (15 amino acids) supplied as a lyophilized research reference compound. CAS 137525-51-0. Read more in the BPC-157 research overview.
What is GHK-Cu?
GHK-Cu is a copper-binding tripeptide complex (glycyl-L-histidyl-L-lysine coordinated with copper II), studied in extracellular matrix and copper coordination research. Read the GHK-Cu research guide.
What purity are ARG Peptides products?
GLP peptides are HPLC-verified at 99%+ purity and all other compounds at 97%+. Everything is supplied in lyophilized form with a.
How do you ship?
Every order ships with signature confirmation via USPS or UPS, whichever serves your address best. Standard shipping is $15 and UPS 3 Day Select is $20. Orders of $250 or more ship free. We ship within the United States only. Orders placed before 10 AM Mountain Time ship the same day. Weekends and holidays ship the next business day.
Are these peptides for human use?
No. ARG Peptides products are research chemicals sold strictly for in vitro and laboratory research use only. They are not drugs, supplements, or food, and are not intended for human or animal consumption.
FOR LABORATORY RESEARCH USE ONLY: Sale is restricted to qualified researchers. No therapeutic or medical claims are made or implied.