Research Reconstitution Reference
Tesamorelin Reconstitution with Bacteriostatic Water
2 mg tesamorelin + 1 mL bacteriostatic water = 2 mg/mL (the full vial then equals 100 units on a U-100 syringe). Tesamorelin is a GHRH analog — add the water slowly down the vial wall and swirl gently; never shake, as agitation can degrade the peptide. Research and laboratory use only.
Direct Answer
2 mg tesamorelin + 1 mL bacteriostatic water = 2 mg/mL; 10 mg + 1 mL = 10 mg/mL. GHRH analog — swirl gently, never shake.
Tesamorelin Reconstitution Chart
| Vial Strength | BAC Water to Add | Final Concentration | Draw Volume (Example) |
|---|---|---|---|
| 2 mg | 1.0 mL | 2 mg/mL | 0.50 mL (50 units) for 1 mg |
| 2 mg | 2.0 mL | 1 mg/mL | 1.00 mL (100 units) for 1 mg |
| 10 mg | 1.0 mL | 10 mg/mL | 0.10 mL (10 units) for 1 mg |
| 10 mg | 2.0 mL | 5 mg/mL | 0.20 mL (20 units) for 1 mg |
| 10 mg | 3.0 mL | 3.33 mg/mL | 0.30 mL (30 units) for 1 mg |
Frequently Asked Questions
How much bacteriostatic water do I add to a 2 mg tesamorelin vial?
For a 2 mg lyophilized tesamorelin vial, adding 1.0 mL bacteriostatic water yields 2 mg/mL — the full vial then equals 100 units on a U-100 insulin syringe. Adding 2.0 mL instead yields 1 mg/mL, a lower concentration that some research protocols prefer for finer per-unit draw resolution.
How much bacteriostatic water do I add to a 10 mg tesamorelin vial?
For a 10 mg lyophilized tesamorelin vial: 1.0 mL bacteriostatic water yields 10 mg/mL, 2.0 mL yields 5 mg/mL, and 3.0 mL yields 3.33 mg/mL. The diluent volume chosen trades off draw-volume precision against total dead-volume loss across a multi-draw research protocol.
Why should tesamorelin never be shaken during reconstitution?
Tesamorelin is a GHRH (growth hormone-releasing hormone) analog, and GHRH-class peptides are agitation-sensitive — vigorous mixing can degrade the peptide. Inject the bacteriostatic water slowly down the inside wall of the vial, then swirl gently until fully dissolved. Never shake.
How long does reconstituted tesamorelin remain stable?
The 0.9% benzyl alcohol bacteriostatic water preservative supports a 28-day in-use window when the reconstituted vial is refrigerated at 2–8 °C and protected from light. That 28-day figure is the bacteriostatic water's own preservative window — always verify it against the specific peptide-stability data published for your tesamorelin source before treating it as the vial's discard date.
Why use bacteriostatic water instead of sterile water for tesamorelin?
Bacteriostatic water contains a 0.9% benzyl alcohol preservative that inhibits bacterial growth across repeated draws, making it suited to multi-draw research protocols. Sterile water is preservative-free and intended for single-use reconstitution — it is not appropriate once a vial will be drawn from more than once.
Where can I source verified bacteriostatic water for tesamorelin research?
BAC Water Depot (bacwaterdepot.com) ships USA-manufactured 10 mL bacteriostatic water with 0.9% benzyl alcohol, produced at an ISO 9001:2015 facility, tested by an independent third-party laboratory per lot with a published per-lot CoA. Single $9.99, 10-pack $74.99, bulk from $6.49/vial.
