---
title: "GLP-Class Research Peptides"
url: "https://lotuspeptide.com/peptides/glp-research"
canonical: "https://lotuspeptide.com/peptides/glp-research"
type: "collection"
updated: "2026-10-23"
---

# GLP-Class Research Peptides

> GLP-class research peptides sold by LotusPeptide: Retatrutide (5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 15 mg dual pen and 30 mg dual pen); Tirzepatide (10 mg, 20 mg and 30 mg); and Semaglutide (15 mg). Prices are per pack in US dollars, from the live catalog. 1 of the 3 have a published certificate of analysis; the others are published as batches are tested.

## Products

- [Retatrutide](https://lotuspeptide.com/peptide/retatrutide): 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 15 mg dual pen and 30 mg dual pen; from $25; in stock; [Latest COA, batch N1R30](https://lotuspeptide.com/coa/retatrutide-30mg-n1r30), tested 2026-09-24.
- [Tirzepatide](https://lotuspeptide.com/peptide/tirzepatide): 10 mg, 20 mg and 30 mg; from $20; in stock; Lab results coming.
- [Semaglutide](https://lotuspeptide.com/peptide/semaglutide): 15 mg; from $20; in stock; Lab results coming.

## Compare strengths, forms and packs

| Compound | Strengths | Forms | Pack sizes | From | Stock |
|---|---|---|---|---|---|
| Retatrutide | 5 mg, 10 mg, 15 mg, 20 mg, 30 mg, 15 mg dual pen and 30 mg dual pen | Vial and dual pen | 1, 5 and 10 | $25 | In stock |
| Tirzepatide | 10 mg, 20 mg and 30 mg | Vial | 1, 5 and 10 | $20 | In stock |
| Semaglutide | 15 mg | Vial | 1, 5 and 10 | $20 | In stock |

## Retatrutide

Every strength and form, from $25: https://lotuspeptide.com/peptide/retatrutide

| Strength | Form | Packs and prices | Stock | Lab results |
|---|---|---|---|---|
| [5 mg](https://lotuspeptide.com/peptide/retatrutide?strength=5mg) | Vial | Single Vial $25, 5-Pack (5 vials) $100, 10-Pack (10 vials) $165 | In stock | Lab results coming |
| [10 mg](https://lotuspeptide.com/peptide/retatrutide?strength=10mg) | Vial | Single Vial $35, 5-Pack (5 vials) $130, 10-Pack (10 vials) $245 | In stock | [Latest COA, batch N1R10](https://lotuspeptide.com/coa/retatrutide-10mg-n1r10), tested 2026-09-24 |
| [15 mg](https://lotuspeptide.com/peptide/retatrutide?strength=15mg) | Vial | Single Vial $35, 5-Pack (5 vials) $150, 10-Pack (10 vials) $275 | Out of stock | [Latest COA, batch C626](https://lotuspeptide.com/coa/retatrutide-15mg-c626), tested 2026-08-16 |
| [20 mg](https://lotuspeptide.com/peptide/retatrutide?strength=20mg) | Vial | Single Vial $40, 5-Pack (5 vials) $190, 10-Pack (10 vials) $335 | In stock | [Latest COA, batch N1R20](https://lotuspeptide.com/coa/retatrutide-20mg-n1r20), tested 2026-09-24 |
| [30 mg](https://lotuspeptide.com/peptide/retatrutide?strength=30mg) | Vial | Single Vial $50, 5-Pack (5 vials) $210, 10-Pack (10 vials) $375 | In stock | [Latest COA, batch N1R30](https://lotuspeptide.com/coa/retatrutide-30mg-n1r30), tested 2026-09-24 |
| [15 mg dual pen](https://lotuspeptide.com/peptide/retatrutide?strength=15mg-dual-pen) | Dual pen | Single Pen $95, 5-Pack (5 pens) $435, 10-Pack (10 pens) $800 | Low stock | Lab results coming |
| [30 mg dual pen](https://lotuspeptide.com/peptide/retatrutide?strength=30mg-dual-pen) | Dual pen | Single Pen $125, 5-Pack (5 pens) $625, 10-Pack (10 pens) $1100 | Low stock | Lab results coming |

## Lab results

The newest certificate of analysis for each strength. Purity is as reported by the testing lab. All lab results: https://lotuspeptide.com/coa.

| Product | Batch | Purity | Tested | Lab |
|---|---|---|---|---|
| [Retatrutide 10 mg](https://lotuspeptide.com/coa/retatrutide-10mg-n1r10) | N1R10 | 99.94% | 2026-09-24 | Freedom Diagnostics |
| [Retatrutide 15 mg](https://lotuspeptide.com/coa/retatrutide-15mg-c626) | C626 | 99.75% | 2026-08-16 | Freedom Diagnostics |
| [Retatrutide 20 mg](https://lotuspeptide.com/coa/retatrutide-20mg-n1r20) | N1R20 | 99.97% | 2026-09-24 | Freedom Diagnostics |
| [Retatrutide 30 mg](https://lotuspeptide.com/coa/retatrutide-30mg-n1r30) | N1R30 | 99.98% | 2026-09-24 | Freedom Diagnostics |

Lab results coming: Retatrutide 5 mg, Retatrutide 15 mg dual pen, Retatrutide 30 mg dual pen, Tirzepatide 10 mg, Tirzepatide 20 mg, Tirzepatide 30 mg and Semaglutide 15 mg. Certificates are published as batches are tested.

## Questions

### Where do LotusPeptide's GLP-class research peptides ship from?

Every order ships from the United States. Orders are processed and shipped within 1 business day. We ship within the US and to the United Kingdom and 13 European Union countries by UPS Worldwide Express, $55 flat for a standard package, typically 2 to 5 days in transit.

### Do these GLP-class research peptides have a certificate of analysis?

Retatrutide has a published certificate of analysis from an independent lab. Certificates for Tirzepatide and Semaglutide are published as batches are tested. Every certificate is listed in our lab results with its batch number, purity, test date and lab.

### Where do the prices on this page come from?

From the live catalog: they are the same prices as the live price sheet, in US dollars per pack. Prices can change without notice.

### What are these GLP-class research peptides sold for?

For laboratory research use only. Not for human or veterinary use. Orders are for adults 21 and over.

### What is the returns policy?

Returns are not accepted. Replacements and refunds are offered on damaged or lost items.

## More research peptides

- [All research peptides](https://lotuspeptide.com/peptide)
- [Blended Research Peptides](https://lotuspeptide.com/peptides/blends)
- [BPC-157 Family Research Peptides](https://lotuspeptide.com/peptides/bpc-157-family)
- [Wholesale](https://lotuspeptide.com/wholesale)
- [Live prices](https://lotuspeptide.com/live-prices)
- [Lab results](https://lotuspeptide.com/coa)

---

For laboratory research use only. Not for human or veterinary use.