Neurology Emergency Medicine General Medicine Standard — widely used correction formula
Corrected Phenytoin Level
Corrects total phenytoin level for hypoalbuminaemia. Phenytoin is ~90% protein-bound — low albumin causes falsely low total levels. Used in epilepsy management and toxicity assessment.
References
- Winter ME, Tozer TN. Phenytoin. In: Applied Pharmacokinetics: Principles of Therapeutic Drug Monitoring. 3rd ed. Applied Therapeutics, 1992.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Drugs
- Hydroxychloroquine (Ophthalmic Toxicity Monitoring) · Antimalarial — Ophthalmic Toxicity Monitoring Drug
- Phenylephrine · Alpha-1 Adrenergic Agonist (Pure Vasoconstrictor)
- Hydrocortisone (ICU — Stress Dosing) · Corticosteroid (ICU/Septic Shock)
- Phenytoin / Fosphenytoin · Antiepileptic — Status Epilepticus (Second-Line)
- Carbimazole · Antithyroid Drug
- Zoledronic Acid · Bisphosphonate (IV)
Pathways
- Acute Stroke / TIA Assessment · NICE NG128; RCP Stroke Guidelines 2023
- Status Epilepticus (Adults) · NICE CG137; ESEM guidelines; RCP Neurology Guidelines
- Suspected Subarachnoid Haemorrhage · NICE NG228; RCEM 2023; AHA/ASA 2023
- Adult Head Injury · NICE NG232 (2023)
- Bell's Palsy / Facial Nerve Palsy · ENT UK 2017; AAN
- Vertigo Workup · ENT UK; NICE CKS
Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.