# Laboratory Animal Medical Record Shorthand: H/S, COF, SPF, MI, UD, WPL and More

> Shorthand used in laboratory-animal (research facility) medical records — H/S, COF, ATG, SPF, MI, UD, TM, TNT, WPL, F/W, Mal and more — from the University of Michigan list of accepted veterinary shorthand.

- Source page: https://wevet.in/vet-abbreviations/laboratory-animal-record-shorthand/
- Type: Abbreviations
- Publisher: WeVet
- Updated: 2026-11-01
- Audience: veterinarians and veterinary students

Shorthand accepted for laboratory-animal medical records in the University of Michigan list of accepted veterinary medical shorthand and acronyms [1]. Many of these terms are specific to research animal facilities and do not appear in general veterinary abbreviation guides.

## Laboratory animal shorthand

| Abbreviation | Meaning | Note |
|---|---|---|
| H/S | Hunched and scruffy [1] |  |
| COF | Chow on floor [1] |  |
| ATG | Added to green [1] |  |
| ED | Enviro-dri [1] |  |
| SPF | Specific pathogen free [1] |  |
| MI | Micro-isolation, micro-isolator [1] |  |
| B Trio / Brd Trio | Breeding trio [1] |  |
| W | Weanlings [1] |  |
| UD | Ulcerative dermatitis [1] |  |
| TM | Tumor monitoring [1] |  |
| TNT | Toenail trim [1] |  |
| Mal | Malocclusion [1] |  |
| F/W | Fight wounds [1] |  |
| DA | Distended abdomen [1] |  |
| EU | Excessive urination [1] |  |
| U/F | Urine and feces [1] |  |
| SSD | Silver sulfadiazine [1] |  |
| TAO | Triple antibiotic ointment [1] |  |
| F.O. | Find original [1] |  |
| WPL | Within protocol limits [1] |  |
| VT | Veterinary technician [1] |  |
| Sl | Slightly [1] |  |
| Neg. | Negative [1] |  |

## Frequently asked questions

### What does H/S mean in a mouse health record?

Hunched and scruffy, in the University of Michigan list of accepted shorthand [1].

### What does SPF mean?

Specific pathogen free [1].

## References

[1] Accepted Veterinary Medical Shorthand and Acronyms — University of Michigan research website (az.research.umich.edu) (last updated 2016). https://az.research.umich.edu/sites/default/files/media/embedded/Accepted%20Veterinary%20Medical%20Shorthand%20and%20Acronyms.pdf

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Numbers in [brackets] cite the references above. For veterinary professionals. Information supports — never replaces — clinical judgement; always check the current product label and local regulations.
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