How much epinephrine is in one carpule of 1:100,000?

How much epinephrine is in one carpule of 1:100,000?

• A. 0.010 ml in one carpule
• B. 0.018 ml in one carpule
• C. 0.030 ml in one carpule
• D. 0.050 ml in one carpule

Answer: (B)

The amount of epinephrine in a carpule is found by multiplying the concentration by the cartridge volume. A 1:100,000 solution contains 0.01 mg of epinephrine per milliliter. A standard carpule is 1.8 mL, so the epinephrine per carpule is 0.01 mg/mL × 1.8 mL = 0.018 mg. So, the per-carpule dose is 0.018 mg. The option that lists 0.018 ml likely reflects a misprint; the correct unit is milligrams, not milliliters. This emphasizes remembering that dose equals concentration times volume.

The amount of epinephrine in a carpule is found by multiplying the concentration by the cartridge volume. A 1:100,000 solution contains 0.01 mg of epinephrine per milliliter. A standard carpule is 1.8 mL, so the epinephrine per carpule is 0.01 mg/mL × 1.8 mL = 0.018 mg. So, the per-carpule dose is 0.018 mg. The option that lists 0.018 ml likely reflects a misprint; the correct unit is milligrams, not milliliters. This emphasizes remembering that dose equals concentration times volume.