Pharmaceutics Sig Codes and Conversions to Know

1 inch = ? cm

2.54

1 meter = ? in

39.37

1 fl oz (fluid ounce) = ? mL

29.57

1 pint = ? fl. oz

16

1 pint (16 fl. oz) = ? mL

473

1 quart = ? fl. oz

32

1 quart (32 fl. oz) = ? mL

946

1 gal = ? fl. oz

128

1 gal (128 fl. oz) = ? mL

3,785

1 lb = ? g

454

1 kg = ? lb

2.2

1 grain (gr) = ? mg

65

q

every

aa.

of each

qs

quantity sufficient

sig

write - directions

gtt(s)

drops

ac

before meal

ATC

around the clock

qd

everyday

bid

twice a day

o.u.

each eye (both)

a.u.

each ear (both)

am

morning

tid

3 times a day

qid

4 times a day

qod

every other day

qhs

every night at bed time

N&V

nausea & vomitting

qwk

every week

o.d.

right eye

a.d.

right ear

stat

immediately

APAP

acetaminophen

ASA

Aspirin

prn

as needed

c

with

pc

after meal

o.s.

right eye

a.s.

left ear

roman numeral: ss

1/2

roman numeral: V

5

roman numeral: X

10

roman numeral: L

50

roman numeral: C

100

roman numeral: D

500

roman numeral: M

1000

1 tsp = ? mL

5

1 tbsp = ? mL

15

1 ml = ? drops* (varies by calibration)

20

ad

up to

disp

dispense

d.t.d

give of such doses

ft

make

M.

mix

non rep.

do not repeat

q.s. ad

quantity sufficient to make

f/fl

fluid

fl₃ / f₃

fluid down

fl₃ss/f₃ss

½ fl.oz

IU

international units

mEq

mosm

milliosmoles

pt

pint

qt

quart

ad lib.

at pleasure

ut dict

as directed

m/n

morning and night

admin

administer

aq.

water

s

without

dil

dilute

S.O.S

if there’s a need

noct

night

NPO

nothing by mouth

EES

erythromycin ethyl succinate

HC

hydrochortisone

HCTZ

hydrochlorothiazide

MTX

methotrexate

NSAID

nonsteroidal anti-inflammatory drug

NTG

nitroglycerin

ADR

adverse drug reaction

BM

bowel movement

BS

blood sugar

CAD

coronary artery disease

CHD

coronary heart disease

CRF

chronic renal failure

ENT

ears, nose, throat

GERD

gastrointestinal reflux disease

GFR

glomerular filtration rate

GU

genitourinary

HA

headache

IOP

intraocular pressure

MI

myocardial infarction

OA

osteoarthritis

amp

ampule

pulv

powder

supp

suppository

susp

suspension

NS

normal saline