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Understanding mg/mL, IU/mL, etc.

02gixxersix

New member
There have been some scary threads lately where people who seem to have already been injecting themselves have asked how to convert either IU or mg to mL or cc’s. The answer to that is that there is no way to convert them. Milligrams (mg) and micrograms (mcg) are measurements of WEIGHT. Milliliters (mL) and cubic centimeters (cc) are measurements of volume. IU’s are a totally different animal and are measured based on their affect on your body or their bioactivity. An IU of one thing is not equal to an IU of another.

As far as IU’s go the common misconception is that to measure out an IU you simply use an insulin syringe. An insulin syringe is a small syringe with a small needle, and usually holds either 1mL or 1/3 mL of a liquid. They are also usually broken down into 100 or 30 units respectively and this is where some of the misunderstanding comes into play. Those units are NOT a measurement of IU’s. They are measutements of 1/100th of a ML. However, insulin USUALLY comes in a dosage of 100 IU’s per mL, so each tick on an insulin syringe will USUALLY be 1 IU, making it easy for the user.

When it comes to measuring out any substance, insulin included, it is imperative that you know the weight/volume measurement. This will usually be on the side of a vial or ampule and it will look something like 50mg/ml or 200mg/ml. That means that for every mL or cc of the liquid that you draw into the syringe, you are getting that amount of the substance. When it comes to any substance which you must mix yourself such as HCG or IGF-1, you can pretty much make it as strong or weak as you want it. HCG for instance comes commonly in 5000 mcg ampules. You mcg/ml strength is going to depend on how much bacteriostatic water you add to the solution. If you add 1mL than you will have 5000 mcg/mL. If you add 2mL you will have 2500 mcg/mL and so on and so forth. A good rule of thumb with this stuff is to make it a good even number. If you have 5000 mcg, add 5 mL of water to make it 1000 mcg/mL, and not it is easier to dose.
(To add to that when you mix these things yourself you ARE NOT using regular or distilled water, you use bacteriostatic water)


Here are the basic definitions of the units commonly used in this game:
Measured by effect or bioactivity:

In pharmacology, the International unit (IU, alternatively abbreviated UI, from French unité internationale) is a unit of measurement for the amount of a substance, based on measured biological activity (or effect). What this means is that an IU of insulin is not the same weight or amount as an IU of HCG. It is measured by its effect.

Measurements of Weight:

Milligram (mg) - A unit of mass equal to one thousandth (10-3) of a gram.
Microgram (mcg) - A unit of mass equal to one thousandth (10-3) of a milligram or one
millionth (10-6) of a gram.

Measurements of Volume:

Milliliter (mL) - A unit of volume equal to one thousandth (10-3) of a liter

Cubic centimeter (cc) - a metric unit of volume equal to one thousandth of a liter

As you can see a mL is equal to a CC and vise versa.


What it all comes down to is doing your research before you go injecting something into your body. When you have any doubts COME ON HERE AND ASK FIRST!!! That is what these boards are here for. If someone does not understand the measurements and accidentally injects 2000 mg’s of test, well that’s not good but you’ll live. If you accidentally injected yourself with 2mL of 100IU/mL insulin then you may end up killing yourself. I hope some of this helps and I’m sure a lot of people have stuff to add.
 
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