| ART | absolute retention time; Accredited Record Technician; acoustic reflex test; algebraic reconstructio... |
|---|---|
| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |
| SPT | secretin-pancreazymin [test]; single patch technique; sleep period time; spectrin; station pull-thro... |
| WNL | Within Normal Limit(?) |
| LD50/30 | a dose that is lethal for 50% of test subjects within 30 days |