IV Admixture Osmolarity Calculator: Latest and updated 2026
IV Admixture Osmolarity Calculator v1.0
Calculate Osmolarity for Any IV Compounding — TPN, Hydration, Med Admixtures
Base IV Solution
mL
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Added Components & Medications
IV Admixture Osmolarity Results
Total Osmolarity: — mOsm/L
0
450 (PPL max)
900 (CVC)
1500+
Base Fluid Osmolarity
Selected fluid
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Added Components Osmolarity
All admixtures and medications
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Total Osmolarity
Final calculated value
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Osmolarity per mL
For infusion rate calculations
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| Component | Amount | mOsm Contributed |
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📋 Clinical Recommendation
Calculating…
📖 Reference Ranges
Peripheral IV (long-term): ≤ 450–600 mOsm/L
Peripheral Parenteral Nutrition (PPN): ≤ 900 mOsm/L (24–48 hours max)
Central Parenteral Nutrition (CPN): No upper limit, typically 1200–1800 mOsm/L
Midline catheter: ≤ 600 mOsm/L for extended therapy
Infusion phlebitis risk increases significantly above: 600 mOsm/L
