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WTWH Sig
Common Sigs (Direction codes)
| Question | Answer |
|---|---|
| Q | every |
| QD | every day or daily |
| QOD | every other day |
| QAM | every morning |
| QPM | every evening |
| QHS | at bedtime |
| Q4h | every 4 hrs |
| Q6h | every 6 hrs |
| Q8h | every 8 hrs |
| QW | every week |
| BID | twice daily |
| TID | three times daily |
| QID | four times daily |
| UD | as directed |
| PRN | as needed |
| OU | both eyes |
| OS | left eye |
| OD | right eye |
| Gtt (s) | drop (s) |
| AC | before meals |
| PC | after meals |
| IEN | in each nostril |
| CW | chest wall |
| SL | sublingual |
| SQ or SC | subcutaneous |
| U | units |
| AU | both ears |
| AS | left ear |
| AD | right ear |
| SOB | shortness of breath |
| Q4-6h | every 4-6 hrs |
| PO | by mouth or orally |
| qs | quantity sufficient or equal to |