A reta 30mg vial contains 30 milligrams of lyophilized retatrutide research peptide. Learn what it is, how it's reconstituted, and how it's stored.
A reta 30mg vial is a single glass vial containing 30 milligrams of lyophilized retatrutide, a synthetic triple-agonist research peptide. It is sold as a laboratory reference material, and retatrutide is not FDA-approved for human use in the United States. The 30 mg size is the largest option most suppliers list, which makes it common in labs that run repeated assays.
What Reta 30 Means in a Supplier Catalog
Retatrutide is an investigational compound that activates three receptors at once: GLP-1, GIP, and glucagon. Eli Lilly has studied it in mid- and late-stage trials for obesity and type 2 diabetes, but it remains experimental outside of those studies.
In catalogs and research forums, the shorthand reta 30 or reta 30 peptide simply means a vial holding 30 mg of the compound. A reta 20 peptide listing is the same molecule in a 20 mg vial. The number always describes total peptide mass, never concentration or volume.
Vial Sizes Compared
Vial size changes only how much powder you have, not how strong the solution is. Concentration is set entirely by the volume of diluent you add.
| Vial size | Total peptide | At 3 mL diluent | At 6 mL diluent | Typical lab use |
|---|---|---|---|---|
| 5 mg | 5 mg | ~1.7 mg/mL | ~0.8 mg/mL | Small pilot assays |
| 10 mg | 10 mg | ~3.3 mg/mL | ~1.7 mg/mL | Short research runs |
| 20 mg | 20 mg | ~6.7 mg/mL | ~3.3 mg/mL | Mid-size protocols |
| 30 mg | 30 mg | 10 mg/mL | 5 mg/mL | Long runs, multiple assays |
The 30 mg vial is the only size where 3 mL of diluent lands on a round 10 mg/mL, which is one reason it stays popular.
Reconstituting a Reta 30mg Vial
Reconstitution means adding a diluent, usually bacteriostatic water, to the freeze-dried powder. The basic lab steps are straightforward:
- Bring the vial and the diluent to room temperature.
- Wipe the rubber stopper with 70% isopropyl alcohol and let it dry completely.
- Draw the target volume of diluent with a fresh syringe.
- Aim the needle at the inside wall of the vial and let the liquid run down slowly.
- Swirl gently until the powder dissolves. Do not shake the vial.
- Label it with the date, final concentration, and lot number.
Diluent quality matters more than most people expect. Researchers comparing notes on the best bac water for peptides typically look for preserved 0.9% sodium chloride solution with a clear expiration date and an intact seal.
Storage and Shelf Life
Unopened vials belong in a freezer at roughly -20°C, away from light. Once reconstituted, a reta vial is stored at 2-8°C and treated as a short-lived solution.
A frequent question is how long is bac water good for in the fridge. Most suppliers advise using a punctured vial of bacteriostatic water within about 28 days when it is refrigerated, though the label on your specific product is the final authority. Repeated warming and cooling cycles should be avoided for both the powder and the mixed solution.
How Reta Compares With Other Research Peptides
Retatrutide sits in a crowded research space that also includes mitochondrial peptides and lipotropic blends.
| Compound | Primary research focus | Common vial sizes | Notes |
|---|---|---|---|
| Retatrutide (Reta) | Triple GLP-1, GIP, and glucagon receptor activity | 5-30 mg | Investigational; no approved human use |
| AOD-9604 | Fat metabolism signaling | 2-5 mg | Fragment of human growth hormone |
| MOTS-c | Mitochondrial and metabolic regulation | 10 mg | Mitochondria-derived peptide |
| Lipo-C | Lipotropic blends, often with B12 | 10 mL multi-dose | Usually contains L-carnitine |
Side-by-side questions such as aod 9604 vs mots-c and lipo c vs mots c come up constantly because these compounds overlap in metabolic research. Because Lipo-C blends typically include L-carnitine, it is also worth reviewing l-carnitine side effects before comparing or handling them.
Safety and Legal Notes for US Buyers
Retatrutide is not FDA-approved for any human use, and vials sold online normally carry a research-use-only label. Purity, sterility, and compound identity are the buyer's responsibility to verify.
A few checks reduce risk:
- A lot-matched certificate of analysis with HPLC and mass spectrometry data
- Stated purity, typically 98% or higher for research-grade peptide
- Amber glass, sealed stoppers, and desiccant in the shipping box
- A supplier with a written reshipment policy
Anyone thinking about a GLP-1 type compound for personal weight loss should speak with a licensed healthcare professional about approved treatments instead. Injecting unapproved research chemicals carries real risks, including dosing errors, contamination, and unknown reactions.
Key Takeaways
- A reta 30mg vial contains 30 milligrams of lyophilized retatrutide powder.
- Final concentration depends on diluent volume, not on vial size.
- Unopened vials stay frozen; reconstituted solution stays refrigerated and is used within weeks.
- Retatrutide is not approved by the FDA for human use in the United States.
Frequently Asked Questions
Is retatrutide legal to buy in the United States?
Retatrutide is not FDA-approved, so it cannot legally be sold as a drug or dietary supplement in the US. Research suppliers sell it labeled for laboratory use only, which places personal human use outside that labeling. Anyone seeking a GLP-1 medication should consult a licensed healthcare provider about approved options.
How much bacteriostatic water goes into a 30mg reta vial?
There is no single standard answer because the right volume depends on the concentration a lab needs. Adding 3 mL of bacteriostatic water to 30 mg of powder yields roughly 10 mg/mL, while 6 mL yields roughly 5 mg/mL. These are laboratory concentration calculations, not human dosing instructions.
How long does a reconstituted reta vial last?
Most suppliers recommend using a reconstituted peptide within about four weeks when it is stored refrigerated at 2-8°C and protected from light. Lyophilized powder that has never been opened can last far longer in a -20°C freezer. Always follow the storage instructions printed on the specific vial.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.