Phenytoin Level Correction Calculator

This calculator is designed for healthcare professionals to adjust phenytoin levels in patients with varying albumin levels and renal function. It helps ensure accurate therapeutic dosing.

Calculator

Results

Corrected Phenytoin Level 0.00 mg/L

Source and Methodology

The calculation is based on the Sheiner-Tozer method, adjusting phenytoin levels according to albumin concentration and renal function. MDCalc. All calculations strictly adhere to formulas from this source.

The Formula Explained

\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]

Glossary of Variables

  • Total Phenytoin Level: The measured phenytoin level in the blood.
  • Albumin Level: The concentration of albumin in the blood.
  • Corrected Phenytoin Level: Adjusted phenytoin level considering albumin and renal function.

How It Works: A Step-by-Step Example

Consider a patient with a measured phenytoin level of 15 mg/L and an albumin level of 3.5 g/dL. Using the formula, the corrected phenytoin level is calculated to account for the albumin level.

Frequently Asked Questions (FAQ)

What is phenytoin used for?

Phenytoin is an antiepileptic drug used to control seizures.

Why do I need to correct phenytoin levels?

Correcting phenytoin levels ensures accurate dosing, especially in patients with altered albumin levels or renal function.

How often should phenytoin levels be checked?

Levels should be monitored regularly, especially during initial treatment or if there are changes in health status.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}\]
\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}
Formula (extracted text)
\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
``` , ', svg: { fontCache: 'global' } };

Phenytoin Level Correction Calculator

This calculator is designed for healthcare professionals to adjust phenytoin levels in patients with varying albumin levels and renal function. It helps ensure accurate therapeutic dosing.

Calculator

Results

Corrected Phenytoin Level 0.00 mg/L

Source and Methodology

The calculation is based on the Sheiner-Tozer method, adjusting phenytoin levels according to albumin concentration and renal function. MDCalc. All calculations strictly adhere to formulas from this source.

The Formula Explained

\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]

Glossary of Variables

  • Total Phenytoin Level: The measured phenytoin level in the blood.
  • Albumin Level: The concentration of albumin in the blood.
  • Corrected Phenytoin Level: Adjusted phenytoin level considering albumin and renal function.

How It Works: A Step-by-Step Example

Consider a patient with a measured phenytoin level of 15 mg/L and an albumin level of 3.5 g/dL. Using the formula, the corrected phenytoin level is calculated to account for the albumin level.

Frequently Asked Questions (FAQ)

What is phenytoin used for?

Phenytoin is an antiepileptic drug used to control seizures.

Why do I need to correct phenytoin levels?

Correcting phenytoin levels ensures accurate dosing, especially in patients with altered albumin levels or renal function.

How often should phenytoin levels be checked?

Levels should be monitored regularly, especially during initial treatment or if there are changes in health status.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}\]
\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}
Formula (extracted text)
\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
``` ]], displayMath: [['\\[','\\]']] }, svg: { fontCache: 'global' } };, svg: { fontCache: 'global' } };

Phenytoin Level Correction Calculator

This calculator is designed for healthcare professionals to adjust phenytoin levels in patients with varying albumin levels and renal function. It helps ensure accurate therapeutic dosing.

Calculator

Results

Corrected Phenytoin Level 0.00 mg/L

Source and Methodology

The calculation is based on the Sheiner-Tozer method, adjusting phenytoin levels according to albumin concentration and renal function. MDCalc. All calculations strictly adhere to formulas from this source.

The Formula Explained

\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]

Glossary of Variables

  • Total Phenytoin Level: The measured phenytoin level in the blood.
  • Albumin Level: The concentration of albumin in the blood.
  • Corrected Phenytoin Level: Adjusted phenytoin level considering albumin and renal function.

How It Works: A Step-by-Step Example

Consider a patient with a measured phenytoin level of 15 mg/L and an albumin level of 3.5 g/dL. Using the formula, the corrected phenytoin level is calculated to account for the albumin level.

Frequently Asked Questions (FAQ)

What is phenytoin used for?

Phenytoin is an antiepileptic drug used to control seizures.

Why do I need to correct phenytoin levels?

Correcting phenytoin levels ensures accurate dosing, especially in patients with altered albumin levels or renal function.

How often should phenytoin levels be checked?

Levels should be monitored regularly, especially during initial treatment or if there are changes in health status.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted LaTeX)
\[\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}\]
\text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1}
Formula (extracted text)
\[ \text{Corrected Phenytoin} = \frac{\text{Total Phenytoin}}{0.2 \times \text{Albumin} + 0.1} \]
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
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