dosage calculations

ac

before meals

pc

after meals

daily

everyday

bid

two times a day

tid

three times a day

qid

four times a day

qh

every hour

ad lib

as desired

stat

immediately

q2h

every 2 hours

q4h

every 4 hours

q6h

every 6 hours

prn

as needed

hs

at bedtime

PO

by mouth

IM

intramuscular

VORB

verbal order read back

PR

per rectum

SubQ

subcutaneous

SL

sublingual

ID

intradermal

GT

gastronomy tube

IV

intravenous

IVP

intravenous push

IVPB

intravenous piggyback

NG

nasogastric tube

tab, tabs

tablet

cap, caps

capsule

gtt

drop

EC

enteric coated

CR

controlled release

susp

suspension

el, elix

elixir

sup, supp

suppository

SR

sustained release

g (gm, Gm)

grams

mg

milligram

mcg

microgram

kg

kilogram

L

liter

mL

milliliter

mEq

milliequivalent

gtt

drop

min, m, mx

minim / one drop or 1/60th of a fluid dram

tsp

teaspoon

pt

pint

gal

gallon

dr

dram

oz

ounce

T, tbs, tbsp

tablespoon

qt

quart

1 mg

1,000 mcg

1 g

1000 mg

1 oz

30 mL

8 oz

1 cup

1 tsp

5 mL

1 dram

5 mL

1 tbsp

15 mL

3 tsp

1 tbsp

1 L

1,000 mL

1 mL

5 gtts/drop

1 kg

2.2 lbs

1 lb

16 oz

IV dosage rate

mL/hr

gtt/min

1 kg

1,000 g (or gm)

cubic centimeter

cc

1 cc

1 mL

unit

u

1 u

1,000 mu

1 in

2.5 cm

grain

gr

1 mL

1 g

1 c

240 mL

household cup

c

16 oz

1 pt

pint

pt

1 pt

480 mL

1 pt

2 cups

2 pt

1 quart

1 qt

960 mL

2 tbs

1 oz

1 tsp

75 gtt/drops

1 qt

4 c

1 ft

12 in

1 yd

3 ft

yard

yd

1 oz

28.35 g

C to F

(degree C x 1.8) + 32 = F

F to C

(degree F - 32 ) / 1.8 = degree C

liquids we eat (liquid at room temp)

Jell-o

Icecream

Popsicles

broth (soup that counts as liquid we eat)

Popsicles

counts as full volume

ex: 4 oz popsicle = 4 oz liquid

Ice chips

count as ½ the volume

ex: 4 oz of ice is 2 oz of fluid

liquids we drink

coffee

juice

water

meal supplements (boost/ensure)

Metric Conversions

L to S: #x1,000

S to L: #/1,000

Dimensional Analysis Formula

Formula Method

Ratio and proportion Method

1:2 = 4:8

Reading Labels

24-h Clock

Metric System Abbreviation

King Henry Died _ Drinking Chocolate Milk