Sermorelin Dosage Calculator

This sermorelin dosage calculator converts a dose in micrograms into the units to draw on a syringe, and it works for the reconstitution maths too: pick a vial and a water amount and the concentration is done for you. Sermorelin amounts are small and its vials include a little 2 mg size, so the draws come out tiny and the mixes strong. Enter the vial, the water and your dose, and get the exact units.

Results update automatically as you type.

On this page

Sermorelin dosage calculator table: 300 mcg in every common mix

Three amounts, five mixes. Read the 300 mcg column across and the draw runs from 6 units to 30 for the identical amount of sermorelin. Nothing changed but the vial size and the water.

Vial	Water	Concentration	200 mcg draw	300 mcg draw	500 mcg draw
2 mg	1 mL	2 mg/mL	10 units	15 units	25 units
2 mg	2 mL	1 mg/mL	20 units	30 units	50 units
5 mg	1 mL	5 mg/mL	4 units	6 units	10 units
5 mg	2 mL	2.5 mg/mL	8 units	12 units	20 units
10 mg	2 mL	5 mg/mL	4 units	6 units	10 units

A unit number quoted without a mix is meaningless for sermorelin exactly as it is for every other compound. Here it is worse than most, because the strong mixes shrink the draw into the part of the barrel nobody can read well.

When the draw gets too small to read

Sermorelin is sold in a 2 mg vial alongside the usual 5 and 10 mg sizes, and small vials make strong mixes. Put 1 mL of water in a 10 mg vial and a 300 mcg amount is a 3 unit draw. Three units sits among the smallest marks on the barrel, where a half-unit reading error is a sixth of the amount gone wrong. Nothing is wrong with the mix itself. It is just hard to measure honestly.

The fix is water, not technique. Mix weaker and the same amount becomes a bigger draw that lands on marks you can see: that same 300 mcg is 12 units in a 5 mg vial with 2 mL of water, and 30 units in a 2 mg vial with 2 mL. The amount does not change by a single microgram. The reconstitution calculator works the same trade backwards: tell it the draw you want, and it tells you the water.

Common questions

How many units is 300 mcg of sermorelin?

It depends on the mix. In a 5 mg vial with 2 mL of water (2.5 mg per mL), 300 mcg is 12 units. The same vial with 1 mL of water is twice as strong, so it is 6 units. In a 2 mg vial with 2 mL (1 mg per mL), it is 30 units. The table above covers the common mixes.

How much water do I add to a 5 mg sermorelin vial?

Your choice, and the water sets how big the draw is. For a 300 mcg amount: with 1 mL of water the draw is 6 units, with 2 mL it is 12 units, and with 3 mL it is 18 units. The amount is 300 mcg every time. Sermorelin draws run small, so the weaker mixes are easier to read. Pick the mix that suits you, or work backwards from the draw you want with the reconstitution calculator.

Why does my vial say mg but my dose is in mcg?

Because the vial holds milligrams and the amounts are worked in micrograms. A 5 mg vial holds 5,000 mcg. It is the most common mix-up with this compound: type 300 into a field expecting mg and the maths is out by a thousand times. This calculator starts in mcg for exactly that reason, and it shows your dose back in both units so you can check it.

How many doses are in a 5 mg sermorelin vial?

At 500 mcg an amount, ten. At 200 mcg, twenty-five. At 300 mcg, sixteen full amounts with a part amount left over. It is the vial amount divided by the dose, and the water has nothing to do with the count. The calculator shows the count for your own numbers as you type.

Is sermorelin still an approved medicine?

Not today. Sermorelin was approved in the United States as Geref, for growth hormone deficiency in children, and the maker stopped selling it in 2008 for commercial reasons. The FDA later confirmed it was not withdrawn over safety or effectiveness. No sermorelin product is currently approved, and the powder vials sold for research are not approved medicines. The methodology page records the regulatory position properly.

Arithmetic only

This calculator does maths on the numbers you enter. It works out concentration, draw volume and syringe units from the vial amount and water volume you give it. Nothing more.

It does not recommend amounts, schedules or products, and it does not know what is in your vial. It uses the amount printed on the label. If the label and the actual contents differ, the result differs too. For medical questions, talk to a clinician.

How the maths works, and where the facts on this site come from: Methodology and sources.

Report an error or ask a question

Found a wrong number on this page, or stuck on the maths? Send a correction or a question here. Confirmed errors get fixed and written into the change log on the Methodology page.