Question 1

Are ENOS products for human consumption?

Accepted Answer

No. Every product sold on this site is strictly for in-vitro laboratory research use only. They are not intended for human consumption, diagnosis, or treatment.

Question 2

How fast do you ship?

Accepted Answer

Orders placed before 3 PM MT ship the same business day from Arizona. Standard delivery is 2-5 business days after dispatch; expedited handling is available at checkout.

Question 3

Is shipping free?

Accepted Answer

Yes. Standard Shipping is free on every US order of $100 or more. Below that, Standard is $9, and Concierge Same Day Delivery is $20. Through November 14, 2026, Standard is free on every order.

Question 4

What's your return policy?

Accepted Answer

Unopened, unused vials in original packaging can be returned within 14 days of delivery. Once a seal is broken or a compound is reconstituted it cannot be returned. Damaged, defective, or incorrect items are replaced free of charge with a prepaid return label.

Question 5

Do I need a license to order?

Accepted Answer

You must be 18 years of age or older and confirm at checkout that you are purchasing for research purposes.

Question 6

How should I store the peptides?

Accepted Answer

Lyophilized peptides ship stable at room temp; store at -20°C on receipt. After reconstitution, refrigerate at 4°C and use within the peptide's known stability window.

Question 7

Do you ship internationally?

Accepted Answer

Contact us before placing an international order; customs regulations vary and some compounds may be restricted.

Question 8

What is retatrutide research peptide, also labeled GLP-3 RET?

Accepted Answer

Retatrutide, also known as LY3437943, is a synthetic peptide agonist of three receptors: the glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide-1 (GLP-1), and glucagon receptors. ENOS uses GLP-3 RET as a catalog label for retatrutide; it does not identify a separate GLP-3 receptor. For in-vitro laboratory research, lot-specific analytical documentation helps assess peptide identity and purity, while receptor activity requires an appropriate functional assay. ENOS supplies retatrutide strictly for in-vitro laboratory research, not for human consumption.

Question 9

What is tirzepatide research peptide, and is it GLP-2?

Accepted Answer

Tirzepatide, also known as LY3298176, is a synthetic peptide with agonist activity at the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. It is not glucagon-like peptide-2 (GLP-2); the ENOS catalog label GLP-2 TIRZ is shorthand, not its scientific classification. In-vitro research can examine its receptor activity and downstream cellular signaling. ENOS supplies tirzepatide strictly for in-vitro laboratory research use, not for human consumption.

Question 10

What is TB-500 research peptide, and is it the same as thymosin beta-4?

Accepted Answer

TB-500 is a commercial research label associated with thymosin beta-4-related peptides; ENOS Labs USA identifies its catalog material as a thymosin beta-4 fragment. Full-length thymosin beta-4 contains 43 amino acids, so a fragment is not interchangeable with the full-length peptide. Because commercial naming can vary, identity verification requires the specified amino acid sequence, any chemical modifications and lot-specific analytical documentation. Mass spectrometry can support molecular mass verification, while HPLC assesses chromatographic purity under the reported method; an HPLC purity percentage alone does not establish sequence identity. ENOS supplies TB-500 strictly for in-vitro laboratory research, not for human consumption.

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