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Rx Measurement
Pharmacy Measurement Abbreviations
| Term | Definition |
|---|---|
| i, ii, .... | one, two, etc. |
| ss | one-half |
| gtt | drop |
| mL | milliliter, millilitre |
| tsp | teaspoon (=5 mL) |
| tbsp | tablespoon (=15 mL) |
| fl oz | fluid |
| L | liter, Litre |
| mcg, μg | microgram |
| mg | milligram |
| g, G, gm | gram |
| mEq | milliequivalent |
| aa | of each |
| ad | to, up to |
| aq ad | add water up to |
| qs, qs ad | add sufficient quantity to make |