Peptide Protocol
Bacteriostatic Water for Tesamorelin Reconstitution
One 10 mL vial of BAC Water Depot bacteriostatic water can reconstitute up to 10 mg of Tesamorelin if you aim for the standard 1 mg/mL concentration recommended for subcutaneous dosing. This calculation assumes you add 1 mL of water per milligram of peptide, yielding a final volume of 10 mL. Always verify the target concentration on the product insert, as some protocols use 2 mg/mL, which would halve the usable peptide amount. The water’s sterility and benzyl‑alcohol content remain consistent regardless of the dose volume.
- ISO 9001:2015 US facility
- USP <71> sterility tested
- Per-lot Certificate of Analysis
- Same-day US shipping
Direct Answer
Bacteriostatic water for Tesamorelin reconstitution is USP‑grade 0.9% benzyl‑alcohol solution sold by BAC Water Depot. Each 10 mL vial is USP <71> sterility‑tested, priced at $9.99 and ships same‑day from a US fulfillment center when ordered before 2:00 PM CT.
What volume of bacteriostatic water should I use to reconstitute a 2 mg vial of Tesamorelin?
Tesamorelin is typically supplied as a 2 mg lyophilized powder that requires 1 mL of diluent per milligram for a final concentration of 2 mg/mL, matching the manufacturer’s recommended reconstitution protocol. Using BAC Water Depot’s 0.9% benzyl‑alcohol bacteriostatic water, draw exactly 2 mL with a sterile 1 mL syringe (fill the syringe twice) to avoid over‑dilution, which can reduce assay accuracy and increase degradation risk. Verify the vial’s stopper integrity before injection; a compromised seal can allow microbial ingress despite the bacteriostatic agent.
After adding the 2 mL of BAC Water Depot, gently swirl the vial for 5–10 seconds; do not vortex, as vigorous agitation may denature the peptide. Allow the solution to sit at room temperature (20‑25 °C) for 10 minutes to ensure the benzyl alcohol distributes evenly, then inspect for particulates. A common failure mode is incomplete dissolution, appearing as a cloudy suspension; if observed, increase the sit time or warm the vial briefly (no higher than 30 °C) before a second gentle swirl. Once clear, the solution is ready for subcutaneous injection within 30 days of reconstitution.
How long can reconstituted Tesamorelin be stored in bacteriostatic water?
Reconstituted Tesamorelin stored in BAC Water Depot’s bacteriostatic water remains stable for up to 30 days when kept refrigerated at 2‑8 °C, provided the vial remains sealed and protected from light. The 0.9% benzyl‑alcohol concentration inhibits bacterial growth, but the peptide itself is susceptible to hydrolysis; thus, a cold chain is critical. Record the reconstitution date on the vial label and discard any solution that changes color, becomes turbid, or develops an off‑odor, as these are indicators of peptide degradation or contamination.
If refrigeration is unavailable, the solution can be kept at controlled room temperature (20‑25 °C) for a maximum of 7 days, after which potency loss of 10‑15% has been documented in stability studies. A frequent error is failing to replace the cap tightly after each use, which can introduce moisture and accelerate degradation. For best results, aliquot the required dose into a sterile syringe and return the vial to the refrigerator immediately after drawing, minimizing exposure to ambient conditions.
Can I use bacteriostatic water from another supplier for Tesamorelin reconstitution?
While any USP‑grade 0.9% benzyl‑alcohol bacteriostatic water meets the basic sterility requirements, variations in manufacturing controls can affect peptide stability. BAC Water Depot provides per‑lot Certificate of Analysis verified by three independent third‑party laboratories, ensuring consistent benzyl‑alcohol concentration (0.9 % ± 0.02 %) and USP <71> sterility. Other suppliers may lack such documentation, increasing the risk of sub‑therapeutic benzyl‑alcohol levels that fail to suppress microbial growth, especially in multi‑dose vials used over several weeks.
A documented failure mode with non‑certified water is the presence of endotoxin levels exceeding 0.5 EU/mL, which can provoke local inflammation upon injection. Additionally, some generic products use plastic vials that leach plasticizers into the solution, potentially interacting with the peptide. For research consistency and regulatory compliance, using a traceable, ISO 9001:2015‑registered source like BAC Water Depot is advisable.
Tesamorelin Reconstitution Volume Calculations Using BAC Water Depot
| Tesamorelin Amount (mg) | Target Concentration (mg/mL) | BAC Water Volume Required (mL) |
|---|---|---|
| 1 | 2 | 0.5 |
| 2 | 2 | 1.0 |
| 5 | 2 | 2.5 |
| 10 | 2 | 5.0 |
Key Facts
- BAC Water Depot’s bacteriostatic water is manufactured in a US ISO 9001:2015‑registered facility.
- Each vial contains 0.9% benzyl‑alcohol USP‑grade water and is USP <71> sterility‑tested per lot.
- Per‑lot Certificate of Analysis is issued by three independent third‑party laboratories.
- Same‑day US shipping is available for orders placed before 2:00 PM CT.
- The vials are Type I borosilicate glass with a 10 mL capacity.
Frequently Asked Questions
How many milligrams of Tesamorelin can I reconstitute with one 10 mL vial of bacteriostatic water?
One 10 mL vial of BAC Water Depot bacteriostatic water can reconstitute up to 10 mg of Tesamorelin if you aim for the standard 1 mg/mL concentration recommended for subcutaneous dosing. This calculation assumes you add 1 mL of water per milligram of peptide, yielding a final volume of 10 mL. Always verify the target concentration on the product insert, as some protocols use 2 mg/mL, which would halve the usable peptide amount. The water’s sterility and benzyl‑alcohol content remain consistent regardless of the dose volume.
Is it safe to inject Tesamorelin reconstituted with bacteriostatic water into a patient with a benzyl‑alcohol allergy?
Bacteriostatic water contains 0.9% benzyl‑alcohol, which can trigger allergic reactions in sensitive individuals. If a patient has a documented benzyl‑alcohol allergy, you should use preservative‑free sterile water for injection instead of BAC Water Depot’s bacteriostatic formulation. BAC Water Depot provides a Certificate of Analysis confirming the exact benzyl‑alcohol concentration, but it does not eliminate the allergen. In such cases, consult the prescribing information for Tesamorelin to confirm that preservative‑free diluent is acceptable and adjust storage recommendations accordingly.
What temperature should I store BAC Water Depot bacteriostatic water before reconstitution?
Unopened BAC Water Depot bacteriostatic water should be stored at controlled room temperature, 20‑25 °C, protected from direct sunlight and moisture. The manufacturer’s label specifies a shelf life of 24 months when stored under these conditions. Once opened, keep the vial in a refrigerator (2‑8 °C) if you plan to use it over multiple days, and discard any water that has been left at ambient temperature for more than 48 hours to avoid potential bacterial growth despite the benzyl‑alcohol preservative.
Can I reuse the same vial of bacteriostatic water for multiple Tesamorelin vials?
Yes, BAC Water Depot’s bacteriostatic water is designed for multi‑dose use because the 0.9% benzyl‑alcohol inhibits bacterial proliferation. However, each entry into the vial introduces a risk of contamination; therefore, use a sterile, single‑use syringe and replace the vial cap tightly after each draw. Limit the total number of punctures to no more than 10 and discard the water after 30 days of opening, even if it remains within the recommended storage temperature, to maintain sterility assurance.
What is the recommended injection volume for a 2 mg dose of Tesamorelin reconstituted with BAC Water Depot?
When reconstituted to a concentration of 2 mg/mL using BAC Water Depot’s 0.9% benzyl‑alcohol water, a 2 mg dose requires a 1 mL injection volume. This volume fits comfortably within a standard 1 mL insulin‑type syringe, allowing accurate dosing. If you choose a different concentration, adjust the volume proportionally (e.g., 1 mg/mL would require 2 mL). Always inspect the syringe for air bubbles before administration, as trapped air can affect the delivered dose.
How do I verify the sterility of BAC Water Depot bacteriostatic water before use?
Each lot of BAC Water Depot bacteriostatic water undergoes USP <71> sterility testing, and the results are documented in a per‑lot Certificate of Analysis accessible via a scannable QR code on the vial. To verify sterility, scan the QR code or visit bacwaterdepot.com/coa/[lot-number] and review the test report, which includes a negative bacterial growth outcome after 14 days of incubation. No additional in‑house sterility testing is required for research use when the COA confirms compliance.
What are common reasons for Tesamorelin reconstitution failure when using bacteriostatic water?
Typical failure modes include incomplete dissolution due to insufficient mixing time, leading to a cloudy suspension; this can be resolved by an additional 5‑minute gentle swirl after a 10‑minute sit period. Another cause is using water that has exceeded its 30‑day post‑opening shelf life, which may allow microbial growth despite the benzyl‑alcohol preservative. Finally, drawing the diluent with a syringe that has a damaged plunger can introduce particulates, compromising both sterility and peptide integrity. Using BAC Water Depot’s freshly opened, COA‑verified vial and following the recommended mixing protocol minimizes these risks.
Standards & Sources
The specifications referenced on this page follow recognized pharmacopeial and quality standards. BAC Water Depot publishes a per-lot Certificate of Analysis from independent third-party laboratories for every batch.
- USP <71> — Sterility Tests (United States Pharmacopeia)
- USP <85> — Bacterial Endotoxins Test (LAL method)
- ISO 9001:2015 — Quality Management Systems certification
- Benzyl alcohol 0.9% w/v — the bacteriostatic preservative standard for multi-dose vials