This page discusses the American Standard System of Measurement.
Pharmacy Technicians need to be familiar with several systems of measurement to perform the everyday tasks required in a pharmacy.
The American Standard system of measurement is important because it will be the one most familiar to your customers.
And it's important to be able to explain dosage information in terms they can easily understand and recall later.
The American Standard system is also referred to as the Household system.
Volumes of liquid are measured in:
Conversions within the Household system are as follows:
3 teaspoons = 1 tablespoon (one-half of a fluid ounce)
2 tablespoons = 1 fluid ounce
8 fluid ounces = 1 cup
2 cups = 1 pint (16 fluid ounces)
2 pints= 1 quart (32 fluid ounces)
4 quarts = 1 gallon (128 fluid ounces)
Weight is measured in:
There are 16 ounces to a pound.
Length is measured in:
12 inches = 1 foot
3 feet = 1 yard
1760 yards = 1 mile(5280 feet)
The most common calculations you'll need to make will be converting a metric measurement into an American standard measurement.
Kilograms into pounds or milliliters into teaspoons for example.
Here are the most common Metric to Standard conversions that you will encounter.
1 kilogram (1000 grams) = 2.2 pounds
3.8 liters (3800 milliliters) = 1 gallon
5 milliliters = 1 teaspoon
15 milliliters = 1 tablespoon
29.6 milliliters = 1 fluid ounceIt's important to memorize these conversions and also to understand which unit is larger.
This makes it easy to double check a conversion to ensure you did it correctly.
For example, we know that a kilogram weighs more than a pound.
So after converting 5 kilograms, we can look at our answer(11 pounds) and understand that it looks correct.
Teaspoons and tablespoons from milliliters is another common conversion.
Most liquids will be measured in either teaspoons or tablespoons for the customer.
So it's important to understand that when preparing and dispensing medications.
With a little practice, these conversions will become automatic. Just remember to be careful and never add a decimal place at the end of a whole number.
2 ounces for example, will never be written as 2.0 ounces. Decimal places and periods are the most common causes of mistakes in pharmacies.
So remember to take the extra time to double check every conversion you make and explain everything in simple and easy to understand language for the customer.
May 30, 21 12:09 PM
Pataday 0.2% (2.5ml) SIG: Int 1 gtt ou qpm.
May 30, 21 12:01 PM
A prescription for vistaril 50mg reads: take 100mg every 12 hours for 14 days. The pharmacy has 50mg capsules in stock. How many capsules should be dispensed
May 29, 21 11:43 PM
Take 0.5 tablet on Monday’s and 1 tablet every other day. #90. What is the days supply?
Apr 30, 21 11:52 PM
I had my prescription for 90 Xanax 1 Tablet 3X Daily filled February 23rd When is the earliest date for my refill?
Apr 06, 21 11:39 PM
2 tablets 4x per day for 7 days supply needed means
Apr 06, 21 11:34 PM
Jim has to give medicine to his cat every morning for the next 28 days. How many weeks is this?
Mar 07, 21 08:06 PM
I get 60 pills and take one every 6 hours. When is my refill due?
Mar 07, 21 08:03 PM
How many pills do i need if the prescriptions says, 2 tablets twice a day for 30 days?
Mar 07, 21 08:00 PM
If you are prescribed 120ml and you are supposed to take 5ml in a day. How many days will that last you?
Mar 07, 21 07:55 PM
One applicator (37.5 mg of metronidazole/5g cream) intravaginally b.i.d. What is the days supply?
Mar 07, 21 07:52 PM
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Mar 07, 21 07:16 PM
What is the earliest time I can get this filled?
Feb 23, 21 01:29 PM
I have 42 pills. It is prescribed to take 1 every 8 hours as needed. How many days supply is this?
Feb 23, 21 01:24 PM
Rx: Alendronate 5 mg Sig: i tab po q3d How many tablets are required for a 60 day supply?
Feb 15, 21 10:12 PM
How many days if taking 2 pills every 4 hours