Calculator

AOD-9604 reconstitution calculator

Pre-filled with an illustrative 5 mg vial and 2 mL of bacteriostatic water. Tweak any input — the math updates instantly.

Concentration

2.50 mg/mL

Draw (units)

12.0

Draw (mL)

0.120

Doses / vial

16

AOD-9604 is a small, modified piece of human growth hormone (hGH) that people explore for its effects on fat metabolism. Unlike full-length growth hormone, it was developed specifically to target fat cells without affecting blood sugar or causing growth. Early studies, including a Phase 2b trial in obese adults, reported that it influenced fat loss, though research is still considered preliminary. This page covers what AOD-9604 is, how it’s thought to work, and the ways people track its use in the Peptide Pilot app. The calculator above is pre-filled so you can see how the math plays out for a typical AOD-9604 vial.

How the AOD-9604 reconstitution calculator works

A 5 mg AOD-9604 vial mixed with 2 mL of bacteriostatic water gives 2.5 mg/mL. A 300 mcg dose pulls 0.12 mL or 12 units. The vial covers 16 daily doses — about 2.5 weeks at the daily cadence most fat-loss protocols use.

In the worked example below, a 5 mg vial of AOD-9604 reconstituted with 2 mL of BAC water produces a concentration of 2.5 mg/mL. To draw the example dose of 0.3 mg from that vial you pull 0.12 mL — about 12 units on a standard insulin syringe. Change any input and the rest updates instantly so you can pre-plan a vial before you ever touch a needle.

Vial size, diluent volume, and dose are the three inputs that genuinely change the answer. Doses-per-vial is a derived output — it's the vial mg divided by the dose mg, rounded down. The most common edge case is a tiny dose: at very high concentration, a 0.1 mL draw is only a few units on the syringe, which is hard to read accurately. If your unit count drops below five, consider reconstituting the next vial with more BAC water so each dose covers a larger volume.

Reconstituting AOD-9604 correctly is the first step toward consistent and accurate tracking. The peptide arrives as a delicate, freeze-dried powder that must be mixed into a liquid solution before it can be measured and administered. The standard liquid for this is bacteriostatic water, which is sterile water that contains a small amount of benzyl alcohol to prevent bacterial growth. When you are ready to mix, you’ll first want to gently tap the vial to make sure all the powder has settled at the bottom. Then, using a fresh syringe, draw up your chosen amount of bacteriostatic water—in our example, we will use 2mL.

With your 2mL of water in the syringe, you will carefully insert the needle through the rubber stopper of the AOD-9604 vial. Angle the needle so the water runs down the inside wall of the vial instead of spraying directly onto the peptide powder. This gentle technique helps prevent any potential damage to the fragile peptide molecules. Once all the water is in, you should gently swirl the vial or roll it between your hands until the powder is fully dissolved. Do not shake the vial vigorously. The final solution should be completely clear. With a 5mg vial and 2mL of water, your final concentration is 2.5mg of AOD-9604 for every 1mL of liquid.

Now, let's look at how to draw a specific dose. If your target dose is 0.3mg, you need to do a little math, which the Peptide Pilot calculator handles for you. With a concentration of 2.5mg/mL, the calculation is: (0.3mg dose / 2.5mg per mL) = 0.12mL of liquid. Since a standard insulin syringe measures volume in units (where 100 units equals 1mL), you would need to draw 12 units on the syringe to get your 0.3mg dose. Being precise in both reconstitution and dose drawing is key to a protocol’s consistency and makes the data you track in the app much more reliable.

Worked example

A worked AOD-9604 reconstitution, step by step

  1. Start with the vial: 5 mg of AOD-9604 sitting in dry powder.
  2. Inject 2 mL of bacteriostatic water down the inside wall — don't shoot it straight at the powder.
  3. Concentration locks in at 5 ÷ 2 = 2.50 mg/mL for the entire life of the vial.
  4. A 0.3 mg dose becomes 0.120 mL of liquid, which reads as 12 units on a U-100 syringe.
  5. That vial has 16 clean draws in it before a partial dose at the bottom forces a new vial.

AOD-9604 BAC water choices for this vial

The same 5 mg AOD-9604 vial mixed with three different bacteriostatic water volumes. Doses-per-vial stays constant; the syringe unit count changes.

BAC water (mL)Concentration (mg/mL)Units for 0.3 mg dose
15.006
22.5012
31.6718

Lower BAC water volume concentrates the AOD-9604 solution and shrinks the unit count per dose. Higher volume spreads the dose into a more readable unit range.

Scenarios people actually run into

Three things that come up logging AOD-9604

  • Fresh 5 mg vial, no time to look things up. 2 mL of bacteriostatic water down the inside wall, swirl for a minute, write the date on the cap, done — concentration is now 2.50 mg/mL for the next 2-ish weeks.
  • Your previous vial was reconstituted differently. Don't trust muscle memory on the unit count — the new vial's concentration is the only number that drives this draw.
  • Powder didn't fully dissolve after the swirl. Wait the full five minutes before assuming anything is wrong; AOD-9604 is slower to dissolve than the cleanest GLP-1s, and shaking the vial is the most common way to wreck a fresh reconstitution.

Same-category neighbor

AOD-9604 next to Retatrutide

Both sit in the Fat loss bucket — here's the reconstitution math side by side on each one's example vial.

AOD-9604Retatrutide
Vial5 mg10 mg
BAC water2 mL2 mL
Concentration2.50 mg/mL5.00 mg/mL

Want the full breakdown? Retatrutide reference →

Reconstitution notes for AOD-9604

Reconstituting AOD-9604 correctly is the first step toward consistent and accurate tracking. The peptide arrives as a delicate, freeze-dried powder that must be mixed into a liquid solution before it can be measured and administered. The standard liquid for this is bacteriostatic water, which is sterile water that contains a small amount of benzyl alcohol to prevent bacterial growth. When you are ready to mix, you’ll first want to gently tap the vial to make sure all the powder has settled at the bottom. Then, using a fresh syringe, draw up your chosen amount of bacteriostatic water—in our example, we will use 2mL.

With your 2mL of water in the syringe, you will carefully insert the needle through the rubber stopper of the AOD-9604 vial. Angle the needle so the water runs down the inside wall of the vial instead of spraying directly onto the peptide powder. This gentle technique helps prevent any potential damage to the fragile peptide molecules. Once all the water is in, you should gently swirl the vial or roll it between your hands until the powder is fully dissolved. Do not shake the vial vigorously. The final solution should be completely clear. With a 5mg vial and 2mL of water, your final concentration is 2.5mg of AOD-9604 for every 1mL of liquid.

Now, let's look at how to draw a specific dose. If your target dose is 0.3mg, you need to do a little math, which the Peptide Pilot calculator handles for you. With a concentration of 2.5mg/mL, the calculation is: (0.3mg dose / 2.5mg per mL) = 0.12mL of liquid. Since a standard insulin syringe measures volume in units (where 100 units equals 1mL), you would need to draw 12 units on the syringe to get your 0.3mg dose. Being precise in both reconstitution and dose drawing is key to a protocol’s consistency and makes the data you track in the app much more reliable.

Common AOD-9604 reconstitution mistakes

  • Injecting the reconstitution water directly onto the powder instead of down the side of the vial.
  • Shaking the vial like a protein shake after adding water, which can damage the peptide.
  • Storing the mixed, liquid AOD-9604 vial at room temperature or in direct sunlight.

Frequently asked questions about AOD-9604 reconstitution

How much bacteriostatic water should I use for a AOD-9604 vial?
There's no single right answer — the diluent volume is the variable you control. With this 5 mg AOD-9604 vial, 2 mL is a common starting point because it produces 2.50 mg/mL, which usually puts a typical dose in a comfortable 10–30 unit range on a U-100 syringe. More water = cleaner unit counts but slightly fewer doses per vial. Less water = more doses per vial but harder-to-read syringe markings. AOD-9604 is sometimes supplied at 2 mg vials instead of 5 mg — verify your vial size before defaulting to standard concentration math.
What's the difference between bacteriostatic water and sterile water?
Bacteriostatic (BAC) water contains 0.9 % benzyl alcohol as a preservative, which keeps the reconstituted vial usable for several weeks. Sterile water has no preservative — it's intended for single use, after which the vial should be discarded. For AOD-9604 vials that get drawn from multiple times, BAC water is the standard choice. AOD-9604 is sometimes supplied at 2 mg vials instead of 5 mg — verify your vial size before defaulting to standard concentration math.
Can I shake the AOD-9604 vial after adding water?
Don't shake it — peptides are protein-like molecules and aggressive agitation can break them. After injecting BAC water down the inner wall of the vial, swirl gently or invert the vial a few times. It should clear within a minute or two. Cloudy solution after 5 minutes of gentle swirling is a sign the powder is degraded. AOD-9604 is sometimes supplied at 2 mg vials instead of 5 mg — verify your vial size before defaulting to standard concentration math.
How long does a reconstituted AOD-9604 vial stay usable?
Most lyophilized peptides reconstituted with BAC water are typically used within 4–6 weeks of refrigerated storage. The peptide itself starts to lose potency over time, and the BAC water's preservative window has limits. Writing the reconstitution date on the vial is the easiest guard against using one past that window. AOD-9604 is sometimes supplied at 2 mg vials instead of 5 mg — verify your vial size before defaulting to standard concentration math.

Related on Peptide Pilot

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