What is AOD-9604?
This AOD 9604 reconstitution calculator page covers a peptide derived from human growth hormone. AOD-9604 (often written AOD9604) is a modified fragment taken from the C-terminal end of the growth hormone molecule. It was developed in Australia as an investigational drug candidate, and it is now sold online mainly as a research peptide in 2 mg, 5 mg and 10 mg vials of freeze-dried powder.
Because it is a fragment rather than the whole hormone, AOD-9604 is not the same as somatropin, and its research vials are not interchangeable with HGH (somatropin) products, which are usually labeled in IU rather than mg. This page does not describe any effect of AOD-9604; it covers how the powder, the water and the syringe relate, and what supplier labels say about mixing.
How much BAC water for an AOD-9604 vial?
There is no single right answer. The water volume sets the concentration, and the concentration decides how many syringe units any given amount takes. The chart below compares mcg per unit for the three common vial sizes across several water volumes, which covers the usual AOD 9604 10mg reconstitution and smaller-vial questions in one table.
| BAC water | 2 mg vial | 5 mg vial | 10 mg vial |
|---|---|---|---|
| 1 mL | 20 mcg/unit 2 mg/mL | 50 mcg/unit 5 mg/mL | 100 mcg/unit 10 mg/mL |
| 2 mL | 10 mcg/unit 1 mg/mL | 25 mcg/unit 2.5 mg/mL | 50 mcg/unit 5 mg/mL |
| 3 mL | 6.67 mcg/unit 0.667 mg/mL | 16.67 mcg/unit 1.667 mg/mL | 33.33 mcg/unit 3.333 mg/mL |
Each cell shows mcg per unit on a U-100 syringe (100 units = 1 mL) and the resulting concentration.
Reading down a column shows the trade-off: more water means a weaker solution and more units for the same amount, which can be easier to read precisely; less water means fewer units but a larger amount per unit. For the underlying ratio in plain terms, read the BAC water to peptide ratio guide.
Worked example: AOD 9604 10mg reconstitution math
For example, if the amount you already have is 500 mcg and a 10 mg vial is mixed with 2 mL of BAC water:
The math: 10 mg ÷ 2 mL = 5 mg/mL (5,000 mcg/mL), which is 50 mcg per unit. 500 mcg ÷ 5,000 mcg/mL = 0.1 mL = 10 units on a U-100 syringe.
Every result follows the same three steps: vial amount ÷ water volume gives the concentration, the amount you have ÷ concentration gives mL, and mL × 100 gives U-100 units. Keep both amounts in the same unit first, since 1 mg is 1,000 mcg. For a smaller vial the steps are identical. For example, if the amount you already have is 250 mcg and a 5 mg vial is mixed with 2 mL:
The math: 5 mg ÷ 2 mL = 2.5 mg/mL (2,500 mcg/mL), which is 25 mcg per unit. 250 mcg ÷ 2,500 mcg/mL = 0.1 mL = 10 units on a U-100 syringe.
AOD 9604 how to use: reading the calculator
“AOD 9604 how to use” is a common search, and on this site the answer is limited to the calculator. Enter the mg printed on the vial, the mL of liquid added, and an amount you already have from your own paperwork. The result shows concentration in mg/mL and mcg/mL, the volume in mL and the U-100 unit mark. The chart above is the same arithmetic laid out for several water volumes at once, so you can see the effect of each choice before mixing.
The calculator does not pick the amount, a schedule or a method of administration, and it cannot tell you whether any number is appropriate. If a result looks implausible, the peptide calculator math check shows how to redo it by hand and spot a mg/mcg mix-up.
AOD 9604 mixing instructions on labels: acetic acid and gelling
AOD-9604 is one of the peptides where diluent questions come up most. Some suppliers specify bacteriostatic water; others specify dilute acetic acid, because some peptides dissolve poorly at neutral pH, and a few mention buffered solutions. Some product listings and forum threads also describe the solution appearing cloudy or gel-like after mixing, often searched as “AOD 9604 gelling up”. This site cannot say why a particular vial behaves that way; a solution that does not look the way its label describes is a reason to contact the supplier rather than to carry on. None of this is a recommendation: the specific product’s labeling and a qualified professional decide the diluent.
If a label calls for AOD 9604 acetic acid reconstitution, it names a specific prepared solution, not plain BAC water, and the calculator math is unchanged: concentration still equals vial mg ÷ liquid mL. The guide to BAC water, saline and acetic acid compares the common diluents.
Regulatory status of AOD-9604
AOD-9604 is not an FDA-approved drug. Research-labeled vials sold online are not approved products, and a correct calculation cannot confirm identity, purity, sterility or suitability for any use. Other calculators appear in the peptide library.
AOD-9604 FAQ
How much BAC water for a 5 mg AOD-9604 vial?
The volume only sets the concentration, so there is no single required amount. The chart shows mcg per unit for several volumes; the product labeling decides the diluent and volume.
Do you mix AOD-9604 with acetic acid?
Some suppliers specify dilute acetic acid and others specify bacteriostatic water. Follow the labeling of the specific product; this site does not recommend a diluent.
Why does AOD-9604 look gel-like after mixing?
Some listings describe cloudy or gel-like solutions. The calculator cannot explain a specific vial; a solution that does not match the label description is a reason to contact the supplier.
Does this calculator give an AOD-9604 dose?
No. It converts an amount you already have into mL and U-100 syringe units. It does not recommend an amount, schedule or method of use.
Is AOD-9604 the same as HGH?
No. It is a modified fragment of the growth hormone molecule sold in mg vials, while somatropin products are the full hormone and are usually labeled in IU.