Sig Abbreviations (Codes)*

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*New Set. Disclaimer: Some abbreviations are repeated.

Last updated 2:10 PM on 8/21/26
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240 Terms

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aa

Of each

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ad

Up to, so as to make

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cc

Cubic centimeter (ml)

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eq

Equivalent

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g

Gram

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gal

Gallon

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gr

Grain

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gtt

Drop(s)

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kg

Kilogram

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L

Liter

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lb

Pound

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mcg

Microgram

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mEq

Milliequivalent

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mg

Milligram

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mg/kg

Milligram of drug per kilogram of body weight

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mL

Milliliter (cc)

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mOsm

Milli-osmole

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#

Number or pound

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pt

Pint or patient

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qs

A sufficient quantity

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qs ad

A sufficient quantity to make up to

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qt

Quart

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ss

One-half

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tbsp

Tablespoonful

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tsp

Teaspoonful

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amp

Ampule

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cap

Capsule

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DPI

Dry powder inhaler

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ECT

Enteric-coated tablet

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elix

Elixir

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fl

Fluid

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fl oz

Fluid ounce

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inj

injection

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IV

Intravenous

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IVP

Intravenous push

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IVPB

Intravenous piggyback

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MDI

Metered-dose inhaler

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oint

Ointment

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sol

Solution

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supp

Suppository

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susp

Suspension

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syr

Syrup, syringe

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tab

Tablet

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TDS

Transdermal delivery system

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TPN

Total parenteral nutrition

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ung

Ointment

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D5LR

5% dextrose in lactated Ringer solution

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D5NS

5% dextrose in normal saline solution

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D5W

5% dextrose in water

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D10W

10% dextrose in water

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D20W

20% dextrose in water

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DW

Distilled water

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NS

Normal saline (0.9% sodium chloride)

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½ NS

Half-strength normal saline (0.45%)

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RL or R/L

Ringer lactate solution

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SWFI

Sterile water for injection

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BUC, buc

in the cheek

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IA

Intra-arterial

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ID

Intradermal

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IM

Intramuscular

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IT

Intrathecal

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IV

Intravenous

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NPO

Nothing by mouth

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PER, per

By or through

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PO, po

By mouth

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PR, pr

By rectum

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PV, pv

By vagina

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SL

Sublingual (under the tongue)

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TOP, top

Topical

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VAG, vag

Vaginal

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a

Before

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AC, ac

Before meals

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ad lib

At pleasure, freely

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AM, am

Morning, before noon

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ATC

Around the clock

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Bid, bid

Twice per day

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h, hr

Hour

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Noct

At night

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P

After

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PC, pc

After meals

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PM, pm

Evening, afternoon

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Postop

Postoperative

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PRN, prn

As needed

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q

Each, every

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q4h

Every 4 hr

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q6h

Every 6 hr

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q8h

Every 8 hr

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Qh

Every hour

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QID, qid

Four times per day

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TID, tid

Three times per day

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Wk

Week

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C

Celsius

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c

With

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DAW

Dispense as written

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Dil

Dilute, dissolve

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Disp

Dispense

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F

Fahrenheit

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NR

No refill

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Rx

Take or take this drug

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s

Without