Peptide Dosage Calculator
Gonadorelin Dosage Calculator
A free educational Gonadorelin dosage calculator for research — enter the vial amount and bacteriostatic water volume to get the reconstitution concentration (mg/mL) and syringe-unit reading. Below it, charts convert every Gonadorelin vial size to mL, cc and U-100 units, and show how much bacteriostatic water each vial takes. Research-use concentration math only; it does not recommend a personal dose, route, or frequency.
Pre-fills example values. Every field remains editable.
The amount printed on the vial or listed on a product page.
Liquid volume used for the concentration calculation.
The mass amount to convert into liquid volume for this math example.
Your result
Syringe-unit reading
50 units
= 0.5 mL · 25,000 mcg target amount
Concentration
50mg/mL
Per insulin unit
500mcg
Portions per vial
4
Volume
0.5mL
This calculator is an educational tool for laboratory and research math only. The peptides referenced are research compounds not intended for human or veterinary use, and example values are not medical advice or personal-use instructions. Follow applicable research protocols and regulations.
How the calculator works
Concentration
peptide ÷ liquid
Total peptide divided by liquid volume gives the concentration per mL.
Volume
target ÷ concentration
The target mass divided by concentration gives the liquid volume.
Syringe units
volume × 100
For insulin units, 100 units equals 1 mL, so mL is multiplied by 100.
Reconstituting Gonadorelin
Gonadorelin is studied in hypothalamic-pituitary-gonadal (HPG) axis and fertility research contexts, supplied as a lyophilized powder. Reconstitution is concentration math: the vial amount and the volume of bacteriostatic water you add set the mg/mL concentration. Enter your vial amount and water volume in the calculator above to compute the concentration and syringe-unit reading.
Gonadorelin is typically supplied as a lyophilized powder in research vials of about 2 mg, 5 mg, or 10 mg. Because it is dosed in micrograms, reconstitution volume strongly affects the mcg/mL concentration and the resulting insulin-syringe units. The calculator provides concentration math only and is not a personal dose or medical recommendation.
Gonadorelin concentration reference
Resulting concentration (mg/mL) for common Gonadorelin vial sizes at different bacteriostatic water volumes. This is concentration math for interpreting labels — not a dosing table.
| Vial size | + 1 mL water | + 2 mL water | + 3 mL water |
|---|---|---|---|
| 2 mg | 2 mg/mL | 1 mg/mL | 0.67 mg/mL |
| 5 mg | 5 mg/mL | 2.5 mg/mL | 1.67 mg/mL |
| 10 mg | 10 mg/mL | 5 mg/mL | 3.33 mg/mL |
Concentration = vial amount ÷ water volume. Use the calculator above for syringe-unit interpretation. Confirm your actual vial label before reconstituting.
Gonadorelin syringe unit chart (U-100)
A U-100 insulin syringe holds 1 mL across 100 markings, so one unit is always 0.01 mL no matter what is in the vial. That makes the table below a straight conversion between concentration and syringe markings, covering every Gonadorelin vial size in circulation at each common water volume — it describes what the solution contains, not how much anyone should draw.
| Vial | Water added | Concentration | Per 1 unit | Per 10 units | Full vial |
|---|---|---|---|---|---|
| 2 mg | 1 mL | 2 mg/mL | 20 mcg | 0.2 mg | 100 units |
| 2 mg | 2 mL | 1 mg/mL | 10 mcg | 0.1 mg | 200 units |
| 2 mg | 3 mL | 0.67 mg/mL | 6.7 mcg | 67 mcg | 300 units |
| 5 mg | 1 mL | 5 mg/mL | 50 mcg | 0.5 mg | 100 units |
| 5 mg | 2 mL | 2.5 mg/mL | 25 mcg | 0.25 mg | 200 units |
| 5 mg | 3 mL | 1.67 mg/mL | 17 mcg | 0.17 mg | 300 units |
| 10 mg | 1 mL | 10 mg/mL | 0.1 mg | 1 mg | 100 units |
| 10 mg | 2 mL | 5 mg/mL | 50 mcg | 0.5 mg | 200 units |
| 10 mg | 3 mL | 3.33 mg/mL | 33 mcg | 0.33 mg | 300 units |
One unit = 0.01 mL · amount per unit = concentration × 0.01. Enter your own vial amount and water volume in the calculator above to convert any other combination. This is educational concentration math, not a dosing chart or a personal dose.
Converting Gonadorelin to mL, cc and syringe units
Three of the units people meet here are the same measurement written three ways. 1 cc = 1 mL = 100 units on a U-100 syringe, so a figure quoted in cc needs no conversion to mL at all — 0.25 cc is 0.25 mL, which is 25 units. "cc" (cubic centimetre) is the older volume label and still appears on syringe barrels and in a lot of the material circulating about these compounds.
What does need converting is mass to volume, and that is the one step no rule of thumb can shortcut, because it depends entirely on how much bacteriostatic water went into your own vial. Amount ÷ concentration = volume. The table converts amounts across the range a 2 mg Gonadorelin vial holds, at each water volume.
| Amount | Mixed with 1 mL | Mixed with 2 mL | Mixed with 3 mL |
|---|---|---|---|
| 50 mcg | 2.5 units (0.025 mL) | 5 units (0.05 mL) | 7.5 units (0.075 mL) |
| 0.1 mg | 5 units (0.05 mL) | 10 units (0.1 mL) | 15 units (0.15 mL) |
| 0.2 mg | 10 units (0.1 mL) | 20 units (0.2 mL) | 30 units (0.3 mL) |
| 0.5 mg | 25 units (0.25 mL) | 50 units (0.5 mL) | 75 units (0.75 mL) |
| 1 mg | 50 units (0.5 mL) | 100 units (1 mL) | 1.5 mL — over one 1 mL syringe |
The amounts are round reference figures spanning roughly a fiftieth to a half of this vial, chosen so the arithmetic stays in range for this vial size. They are reference points for reading a label, not suggested amounts. Where a row reports more than one syringe, the volume simply exceeds the 1 mL a U-100 barrel holds at that concentration.
How much bacteriostatic water to add to a Gonadorelin vial
There is no correct answer to this in the sense people usually mean — the water volume is a free choice, and it does not change how much Gonadorelin you have. It changes only how that fixed amount is spread through the solution, and therefore how many syringe markings any given amount occupies. More water means a weaker solution and a larger, easier-to-read volume; less water means a stronger solution and a smaller one.
Two constraints are worth knowing before choosing. A U-100 syringe reads to about half a unit at best, so a volume that lands under roughly 2 units is hard to measure repeatably; and the same barrel stops at 100 units, so a volume over 1 mL cannot be drawn in one go. Water volumes that put your working amount between those two bounds are the practical range. The round-number volumes below are the ones that produce the tidiest concentration figures for each Gonadorelin vial size.
| Vial | Water | Concentration | Whole vial measures |
|---|---|---|---|
| 2 mg | 1 mL | 2 mg/mL | 100 units (one full syringe) |
| 2 mg | 2 mL | 1 mg/mL | 200 units (2 full syringes) |
| 2 mg | 3 mL | 0.67 mg/mL | 300 units (3 full syringes) |
| 5 mg | 1 mL | 5 mg/mL | 100 units (one full syringe) |
| 5 mg | 2 mL | 2.5 mg/mL | 200 units (2 full syringes) |
| 5 mg | 3 mL | 1.67 mg/mL | 300 units (3 full syringes) |
| 10 mg | 1 mL | 10 mg/mL | 100 units (one full syringe) |
| 10 mg | 2 mL | 5 mg/mL | 200 units (2 full syringes) |
| 10 mg | 3 mL | 3.33 mg/mL | 300 units (3 full syringes) |
Medibact supplies the USP-grade bacteriostatic water used for this step, made at an FDA-registered U.S. facility. For the handling method itself see how to reconstitute peptides, and for the cross-compound view see the peptide reconstitution chart.
Gonadorelin is the body's own GnRH, and a research vial holds up to 100 times the old human vial
Gonadorelin is synthetic gonadotropin-releasing hormone, the ten-residue peptide the hypothalamus releases in pulses, formula C55H75N17O13, molecular weight 1,182.3 (PubChem CID 638793). Both US human products are discontinued: Factrel came in 0.1, 0.2 and 0.5 mg vials and Lutrepulse in 0.8 and 3.2 mg kits (Drugs@FDA, read 2026-09-28).
The research vials, at 2, 5 and 10 mg, hold between 4 times the largest Factrel vial (2 mg against 0.5 mg) and 100 times the smallest (10 mg against 0.1 mg). The five current DailyMed labels are all veterinary; Factrel for cattle is a 50 mcg/mL solution, so even the most dilute set-up in the table below is more than 13 times stronger than the veterinary product.
| Vial | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 2,000 mcg | 2,000 mcg/mL | 1,000 mcg/mL | 666.67 mcg/mL |
| 5,000 mcg | 5,000 mcg/mL | 2,500 mcg/mL | 1,666.67 mcg/mL |
| 10,000 mcg | 10,000 mcg/mL | 5,000 mcg/mL | 3,333.33 mcg/mL |
The labelled doses are pulses of a few micrograms, too small to read on a syringe
The Lutrepulse label dose was 5 mcg intravenously every 90 minutes by pump, raised stepwise to 20 mcg; sixteen 5 mcg pulses a day is 80 mcg. The single-dose stimulation test is 100 mcg intravenously (Presse Med 1988, PMID 2964021). Veterinary Factrel states 100 to 200 mcg into the muscle, and a dosage page reviewed 21 May 2026 states 50 to 250 mcg under the skin two to three times a week alongside testosterone, an off-label use.
The gonadorelin dosage page sets out the human labels, the pump trial and the veterinary products
| Reported amount | 2 mg in 2 mL | 5 mg in 3 mL | 10 mg in 1 mL |
|---|---|---|---|
| 5 mcg (one pump pulse) | 0.5 units (below one marked unit) | 0.3 units (below one marked unit) | 0.1 units (below one marked unit) |
| 20 mcg | 2 units | 1.2 units | 0.2 units (below one marked unit) |
| 100 mcg | 10 units | 6 units | 1 units |
| 250 mcg | 25 units | 15 units | 2.5 units |
Learn more about Gonadorelin
The Medibact Gonadorelin Guide covers terminology, research context, and study-summary literacy for Gonadorelin. Reconstitution uses USP-grade bacteriostatic water; for the general method see how to reconstitute peptides.
Reported Gonadorelin dose ranges, each with its source and date, are on the Gonadorelin dosage page.
FAQ
Is gonadorelin the same as hCG?
No. Gonadorelin is GnRH, a ten-residue hormone from the hypothalamus that signals the pituitary to release LH and FSH; it acts upstream and needs a working pituitary. hCG is a much larger glycoprotein hormone made by the placenta that acts on the LH receptor in the testes or ovaries directly. They are dosed differently: gonadorelin in micrograms, hCG in international units.
How many units is 100 mcg of gonadorelin?
From a 2 mg vial with 2 mL of water (1,000 mcg/mL), 100 mcg is 10 units on a U-100 syringe; from a 10 mg vial in 1 mL it is 1 unit. 100 mcg is the intravenous stimulation-test dose (PMID 2964021).
Is the Gonadorelin dosage calculator a personal dosing tool?
No. "Dosage calculator" is the common search term, but this is an educational reconstitution and concentration-math tool: it converts vial amount, bacteriostatic water volume, and syringe capacity into concentration (mg/mL) and unit readings. It does not provide a personal dose, route, frequency, or treatment guidance.
How do I reconstitute Gonadorelin?
Add bacteriostatic water gently down the vial wall and swirl (never shake) until clear. The water volume and the vial amount together set the concentration; the calculator above computes the mg/mL and the syringe-unit reading. This is research concentration math only.
What concentration does a 2 mg Gonadorelin vial give?
2 mg reconstituted with 1 mL of bacteriostatic water is 2 mg/mL; with 2 mL it is 1 mg/mL; with 3 mL it is 0.67 mg/mL. Enter your actual vial amount and water volume above to see the concentration and per-unit reading.
How many units on an insulin syringe is a 2 mg Gonadorelin vial?
A U-100 insulin syringe holds 1 mL across 100 units, so one unit is always 0.01 mL. A 2 mg Gonadorelin vial reconstituted with 1 mL of bacteriostatic water is 2 mg/mL, so each unit contains 20 mcg and 10 units contain 0.2 mg; the whole vial is 100 units. Add 2 mL instead and each unit contains 10 mcg across 200 units. This is a conversion between concentration and syringe markings, not a dose.
How do I convert Gonadorelin mg to mL?
Divide the amount by the concentration. With a 2 mg vial in 1 mL of bacteriostatic water (2 mg/mL), 1 mg occupies 0.5 mL, which is 50 units on a U-100 syringe. Using more water lowers the concentration, so the same amount occupies proportionally more volume — the unit chart above shows this for each water volume.
How many cc is a Gonadorelin draw?
1 cc and 1 mL are the same volume, and on a U-100 syringe both equal 100 units — so a figure quoted in cc needs no conversion, only a decimal shift to units. 0.1 cc is 0.1 mL is 10 units; 0.25 cc is 25 units. "cc" is the older label and still appears on syringe barrels. What that volume contains depends on your concentration: at 2 mg/mL (a 2 mg vial in 1 mL), 10 units holds 0.2 mg.
How much bacteriostatic water should I add to a 2 mg Gonadorelin vial?
The volume is a free choice and does not change how much Gonadorelin is in the vial — only how far it is spread, and therefore how many syringe markings a given amount occupies. 1 mL gives 2 mg/mL, 2 mL gives 1 mg/mL, 3 mL gives 0.67 mg/mL. Two practical bounds apply: a U-100 syringe reads to roughly half a unit, so volumes under about 2 units are hard to measure repeatably, and the barrel stops at 100 units, so anything over 1 mL cannot be drawn in one pass.
Does using more bacteriostatic water make Gonadorelin weaker?
It makes the solution less concentrated, not the vial contents smaller. A 2 mg vial holds 2 mg whether it is dissolved in 1 mL or 3 mL — the same total spread through more liquid, so any given amount is carried in a proportionally larger volume. Doubling the water halves the concentration and doubles the units that the same amount measures as.
Do I recalculate Gonadorelin if my vial is a different size?
Yes, and this is the most common arithmetic error with these compounds. Concentration is vial amount ÷ water volume, so a unit figure worked out for one vial size is wrong for another even with identical water. Gonadorelin circulates in 2 mg, 5 mg, 10 mg vials, and the tables above give each one separately. Enter your own label figures in the calculator rather than reusing a number quoted for someone else's vial.
Does Medibact sell Gonadorelin?
Medibact publishes a Gonadorelin research guide and supplies the USP-grade bacteriostatic water used to reconstitute lyophilized peptides — it does not sell the peptide itself, and neither does this site.
Educational use only — not medical advice. This page summarizes information reported in published research and community practice for educational purposes. It is not medical advice and not a recommendation to use any compound. Any doses, schedules, or combinations shown are examples of what has been reported, not instructions for you. Many peptides described here are research compounds that are not FDA-approved for the uses discussed and may be investigational or restricted. Effects, risks, and legal status vary; individual needs and results vary. Consult a qualified, licensed healthcare professional before making any decision. Do not use this content to diagnose, treat, or dose yourself.