Measurements & Concentrations

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Measurements & Concentrations​

Basic scientific units are used regularly. Here are some important ones to know:

• Milligrams (mg), a measurement of a solid substance such as in a powder vial of MT-2
• Micrograms (mcg), a measurement of a solid substance. Conversion: 1mg = 1000mcg
• Milliliters (mL or ml), a measurement of volume usually of a liquid such as BAC water
• International Units (IU), a measurement of growth hormone and HCG (among others).
  • IUs are a weird unit, think of them like mg or mcg but without any conversion; they differ for every individual compound
  • Example, 10IU of GH is the same “size” as 5000IU of HCG

Liquids are measured in milliliters (mL) or cubic centimeters (cc) if using standard syringes, or units if using insulin syringes.

• 100 units on an insulin syringe = 1mL or 1cc on a standard syringe
• Your syringe is standard if it’s in single digits and decimal places
• Your syringe is an insulin syringe if it goes up to double digits to 50 (½cc) or to 100 (1cc)

Concentration is the amount of a compound in any given liquid (oil, water, solvent, etc).
Imagine the alcohol concentration of vodka vs. beer - vodka is high, beer is low.

• The most common measurements are mg/mL (milligrams per milliliter) and mcg/mL (micrograms per milliliter)
• To find the concentration, divide the amount of compound by the amount of liquid
• Example, you add 2mL of bacteriostatic water to 10mg of a compound. The concentration is 10mg / 2mL = 5mg per mL.
• Example (IU), you add 2mL of bacteriostatic water to 5000IU of a compound. The concentration is 5000IU / 2mL = 2500IU per mL.

The higher the concentration of an oil-based compound like testosterone, the more uncomfortable the injection.
Vodka burns worse than beer does - partially due to concentration.

• Testosterone 300mg/mL or below is generally well tolerated if brewed properly
• Example, Test 400, if it is legitimately 400mg/mL, makes for an unpleasant injecting experience in most users

For easier dosing (and less math), consider tools such as chatGPT (only use it for calculations, it makes mistakes about what the compounds do & how to use them)

Some examples of this math in practice are shown below.

Test E 450mg per week, divided across 3 injections

• Desired dose: 450mg
• Concentration: the bottle says “250”, so the concentration is 250mg/mL
• Frequency: 3 injections per week

Liquid injected (in mL) = desired dose divided by concentration

• 450mg / 250mg per mL = 1.8mL of oil injected weekly

Liquid per injection day = Liquid injected divided by frequency

• 1.8mL / 3 injection days = 0.6mL per injection

How do I measure 0.6mL in a syringe?

• Insulin syringe: 0.6mL = 60 units. Pull to the 60 and then inject.
• Standard syringe: 0.6mL is one small line past the 0.5mL mark. Some standard syringes will say “0.6”. Pull to this mark and then inject.

Credits to the big tanner tattered

 

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