IV / PN osmolarity + central-line flag
Estimated IV/PN solution osmolarity (ASPEN 2014): dextrose% x 50 + amino acid% x 100 + (Na + K mEq/L) x 2, with a central-line threshold band.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Dextrose
- 5 %
- Amino acids
- 2.5 %
- Sodium additives
- 30 mEq/L
- Potassium additives
- 20 mEq/L
Result: Estimated osmolarity 600 mOsm/L — below ~900; peripheral administration acceptable.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Dextrose
- Amino acids
- Sodium additives
- Potassium additives
How this is calculated
Boullata JI, et al. ASPEN Safe Practices for parenteral nutrition. JPEN J Parenter Enteral Nutr. 2014;38(3):334-377. Estimated osmolarity = dextrose%x50 + amino-acid%x100 + (Na+K mEq/L)x2; ~900 mOsm/L central-line threshold. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.