Pharmacy Measurement Conversions
In pharmacy, measurement conversions
of units from one system to another is very common.
You'll want to study all of the different pharmacy conversions to prepare for the PTCB or ExCPT exams. However, I would recommend committing what you would consider the most commonly used to memory first. If you can eventually memorize them all, that's great too.
Liquids
| 1cc |
= 1 mL |
| 5mL |
= 1 tsp |
| 15mL |
= 1 tbsp |
| 30mL |
= 1 oz |
| 480 mL |
= 1 pt |
| 3785 mL |
= 1 gal |
Look at the above conversions, notice the progression of the measurements. Now look at the next conversions and hopefully you will start to see the patterns.
| 3 tsp |
= 1 tbsp |
| 2 tbsp |
= 1 oz |
| 16 oz |
= 1 pt |
| 2 pt |
= 1 qt |
| 4 qt |
= 1 gal |
| 1 Liter |
= 1000 ml (metric) |
Mass / Dry / Solids
| 1 Kilogram |
= 1000 Grams |
| 1 Gram |
= 1000 Milligram |
| 1 Milligram |
= 1000 Micrograms |
| 1 kg |
= 2.2 lbs |
| 1 lbs |
= 454 gm |
| 1 oz |
= 30 gm |
| 16 oz |
= 1 lb |
The Metric system is the most commonly used in pharmacy and all that is used in Chemistry. Surprisingly, the U.S. has never standardized to it with the rest of the world.
| Microgram |
mcg |
| Milligram |
mg |
| Gram |
gm or G |
| Kilogram |
kg |
Insulin units
| 100 IU |
per/mL |
| (100 int'l units) |
(per milliliter) |
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