Lumera Labs Journal · Canada
Tirzepatide vs Semaglutide: A Canadian Researcher's Comparison
Published 2026-02-27 · Lumera Labs Editorial · Canada
Short answer: Semaglutide is a single GLP-1 receptor agonist; Tirzepatide is a dual GLP-1 / GIP agonist. Both are widely investigated in metabolic research. Lumera Labs supplies Semaglutide as an HPLC-verified reference standard in Canada (10 mg, $85 CAD). Tirzepatide is shown here for academic comparison only and is not in our catalog — for a tri-agonist option we carry, see Retatrutide.
Receptor profile
| Compound | Targets | MW (approx) |
|---|---|---|
| Semaglutide | GLP-1 receptor | ~4113 Da |
| Tirzepatide | GLP-1 + GIP receptors (dual) | ~4814 Da |
What we carry
Semaglutide at Lumera Labs: 10 mg vial, $85 CAD. HPLC-verified, lyophilized, shipped 24–48 hr across Canada.
Tirzepatide: Not in our catalog. Tirzepatide is referenced here for academic comparison only. If you need a multi-receptor GLP-1 family option we sell, Retatrutide is a tri-agonist (GLP-1 + GIP + glucagon).
Lyophilization and storage
Both are supplied lyophilized in clear glass vials with chrome-crimped caps. Storage maintains stability 24+ months. Reconstitute with bacteriostatic water; use within 28 days at 2–8°C.
Choosing for your research
Single-receptor mechanism research → our Semaglutide. Triple-agonist follow-up research → our Retatrutide (GLP-1 + GIP + glucagon). Dual-receptor (Tirzepatide-class) research → not currently in our catalog.
Why Lumera Labs?
Our Semaglutide and Retatrutide ship 24–48 hr from Canada. Domestic Canadian shipping eliminates customs holds (a 15–25% risk on US imports). HPLC-verified ≥99% purity per lot, COA available on request.
Frequently Asked Questions
How does Tirzepatide differ from Semaglutide pharmacologically?
Tirzepatide is a dual GLP-1/GIP agonist while semaglutide is a single GLP-1 agonist. In published metabolic research models, dual-receptor compounds often show greater effects than single-receptor ones, though direct comparisons depend on dose and protocol. Lumera Labs does not carry Tirzepatide; this is a literature reference.
Does Lumera Labs carry Tirzepatide?
No. Tirzepatide is referenced here for academic comparison only. Within the GLP-1 family we carry Semaglutide (single GLP-1) and Retatrutide (tri-agonist).
Do you ship semaglutide to all Canadian provinces?
Yes. Lumera Labs ships semaglutide from Canada to all 10 provinces and 3 territories with Insulated tracked shipping. ~4 days transit for most regions.
Are both compounds the same molecular size?
Tirzepatide is larger (~4814 Da) than semaglutide (~4113 Da) due to the additional GIP-binding domain.
Should I order BAC water with my GLP-1 research peptide?
Yes. Lyophilized peptides require reconstitution with sterile or bacteriostatic water before use. Add a 10 mL vial at lumerapeptide.com/products/bac-water/.
Disclaimer: All Lumera Labs products are supplied for laboratory research use only. Refer to our research-use declaration for full terms.