Veterinarians rely heavily on medical abbreviations for the same reasons human doctors do: efficiency, speed, and standardization. However, for a pet owner, looking at an electronic medical chart or a prescription bottle can sometimes feel like trying to crack a secret code.
Here is a breakdown of why vets use this shorthand and how taking the time to learn a few basic terms can benefit you and your pet.
Why Veterinarians Use Abbreviations
- Speed in Emergencies: In a fast-paced or critical care environment, every second counts. Writing or typing HBC is significantly faster than writing “hit by car,” allowing the veterinary team to focus on immediate triage.
- Concise Record Keeping: Animal medical charts can become massive over a pet’s lifetime. Shorthand like V/D (vomiting/diarrhea) or URI (upper respiratory infection) keeps progress notes clean, concise, and easy for other veterinary staff to scan quickly.
- Standardized Communication: Many veterinary abbreviations are rooted in Latin or universal medical terminology. This ensures that if you move or have to take your pet to an emergency clinic, any veterinarian who picks up the file will instantly understand the history—such as knowing AU means “both ears” and BID means “twice daily.”
Is it Wise for Pet Owners to Learn Basic Shorthand?
Yes, it is highly beneficial, provided it is used as a tool for understanding rather than self-diagnosis. Learning a few foundational terms can empower you as a pet owner in several ways:
1. Accurate Medication Administration
The most practical abbreviations to know are the ones found on your pet’s prescription labels. Mistaking a dosage schedule can be dangerous. Familiarizing yourself with these common treatment terms ensures you never skip a beat:
- PO: By mouth
- BID: Twice a day (usually every 12 hours)
- TID: Three times a day (usually every 8 hours)
- PRN: As needed
- EOD: Every other day
2. Peace of Mind When Reviewing Charts
Seeing notes on your pet’s discharge papers can be alarming if you don’t know what they mean. For example, seeing WNL (Within Normal Limits) or NSF (No Significant Findings) on a bloodwork printout sounds technical, but it actually means your pet is perfectly healthy. Knowing these terms saves you unnecessary worry while waiting for a callback from the clinic.
3. Better Communication with Your Vet
When you speak the same basic language as your veterinary team, you can advocate for your pet more effectively. Understanding standard terms like Dx (Diagnosis), Hx (History), or behavior shorthand like BAR (Bright, Alert, Responsive—a sign of a healthy, energetic animal) helps you follow along seamlessly during complex medical updates.
Veterinary abbreviations
Abd – Abdomen
AD – Right ear
AP – Anterior-posterior
AS – Left ear
AU – Both ears
BDLD – Big dog/little dog
DLH – Domestic long-haired cat
DMH – Domestic medium-haired cat
DSH – Domestic short-haired cat
Fel -Feline
F/S – Spayed female
K9 – Canine
M/N – Neutered male
OD – Right eye
OS – Left eye
OU – Both eyes
Diagnostic Abbreviations
BP – Blood pressure
BPM – Beats or breaths per minute
Bx – Biopsy
CBC – Complete blood count
CHF – Congestive heart failure
CT Scan – Computed tomography
CXR – Chest X-ray (radiograph)
DDX – Differential diagnosis
DFW – Dog fight wounds
Dx – Diagnosis
ECG or EKG – Electrocardiogram
EEG – Electroencephalogram
EENT – Eyes, ears, nose and throat
FAD – Flea allergy dermatitis
FBS – Fasting blood sugar
FNA – Fine needle aspirate
Fx – Fracture
HCT – Hematocrit
Hx – History
Inj – Injection
NAF – No abnormal findings
MRI – Magnetic resonance imaging
NSF – No significant findings
PCV – Packed cell volume
RR – Respiratory rate
Sx – Surgery
TPR – Temperature, pulse and respiration rate
UA – Urinalysis
US – Ultrasound
WNL – Within normal limits
Condition & Disease
AF – Atrial fibrillatio
ANS – Autonomic nervous system
ARF – Acute renal failure
BPH – Benign prostatic hypertrophy
CD – Canine distemper
CHF – Congestive heart failure
CPV – Canine parvovirus
CNS – Central nervous system
COPD – Chronic obstructive pulmonary disease
CRF – Chronic renal failure
CV – Cardiovascular
DDD – Degenerative disc disease
DJD – Degenerative joint disease
Felv – Feline leukemia virus
FIA – Feline infectious anemia
FIP – Feline infectious peritonitis
FIV – Feline immunodeficiency virus
HD – Hip dysplasia
HW – Heartworm
Sz – Seizure
URI – Upper respiratory infection
UTI – Urinary tract infection
Symptom Abbreviations
ACT – Activated clotting time
ADR – Ain’t doing right
BARH – Bright, alert, responsive and hydrated
BAR – Bright alert and responsive
BM – Bowel movement
BT – Bleeding time
CSVD – Coughing, sneezing, vomiting, diarrhea
CRT – Capillary refill time
D – Diarrhea
FUO – Fever of unknown origin
HBC – Hit by car
HR – Heart rate
NVL – No visible lesions
PU/PD – Polyuric/polydipsic (excessive drinking and urine)
QAR – Quiet, alert, responsive
REM – Rapid eye movement
R/O – Rule out
ROM – Range of motion
SC – Under the skin
V – Vomiting
V/D – Vomiting/diarrhea
Treatment Abbreviations
Abc or Abx – Antibiotic(s)
Ac – Before meals
ADH – Antidiuretic hormone, Vasopressin
Ad Lib – As desired
BID – Twice per day
Cap – Capsule
CRI – Constant rate infusion
D/C – Discontinue
EOD – Every other day
ED – Every day
Fl – Fluid
IM – Intramuscular
IN – Internasal
IV – Intravenous
NPO – Nothing by mouth
PRN – As needed
Q – Every (e.g., q4hrs means every 4 hours)
QD – Every day (e.g., every 24 hours)
Rx – Prescription
S/R – Suture removal
TID – Three times daily, every 8 hours
Other Important Veterinary Abbreviations
AI – Artificial insemination
Code/Code Blue – Emergency help
COR – Care of remains
O – Owner
OSI – Owner stopped in
OV – Office visit
PCFO – Phone call from owner
PCTO – Phone call to owner
STAT – Immediately
A Note of Caution: While learning basic terminology is a great way to stay informed, always look at it as a bridge to better communication with your vet, rather than a tool to diagnose your pet at home. If you ever see an abbreviation on your pet’s paperwork that you don’t understand or that worries you, never hesitate to ask the clinic staff to clarify!
RVO Vet Corner Files 