mL/h
Medical abbreviation · Prescription
| Stands for | Milliliters per hour |
|---|---|
| Categories | Medical |
mL/h stands for Milliliters per hour, a prescription abbreviation.
Rate unit for IV infusions programmed on infusion pumps, used for maintenance fluids and as the pump setting that delivers a drug's ordered dose. Also written mL/hr.
Example: NS at 75 mL/h; heparin 25,000 units/250 mL running at 12 mL/h (1,200 units/h).
Usage notes
For medication infusions, safety guidance prefers orders written as dose per time (units/h, mg/min) rather than only mL/h, because the mL/h rate depends on the bag concentration and becomes wrong if a different concentration is dispensed. Before infusion pumps, gravity drips were counted in drops per minute.
Related abbreviations
More prescription abbreviations
- mane – Mane (in the morning)
- mcg – Microgram
- mcg/kg/min – Micrograms per kilogram per minute
- mEq – Milliequivalent
- mg/kg – Milligrams per kilogram
- mg/m2 – Milligrams per square meter
- nocte – Nocte (at night)
- non rep – Non repetatur (do not repeat)
- NR – No refills
- NTE – Not to exceed
- OD – Omni die (once daily)
- OJ – Orange juice
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This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.