Endocrinology · Emergency Medicine

Katz Hyperglycemia-Corrected Sodium calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Measured serum sodium (mmol/L)

Serum glucose (mg/dL)

Use only for hyperglycemia with glucose ≥100 mg/dL. The Katz correction adds 1.6 mmol/L sodium per 100 mg/dL glucose above 100 mg/dL.

Result

Complete all required inputs to calculate the score.

Formula inputs

Measured serum sodium (mmol/L)Accepted range: 50 to 250
Serum glucose (mg/dL)Accepted range: 100 to 3000

Primary source

Katz MA. Hyperglycemia-induced hyponatremia—calculation of expected serum sodium depression. N Engl J Med. DOI: 10.1056/NEJM197310182891607. PMID: 4763428. Scope: theoretical sodium correction only for hyperglycemia (glucose ≥100 mg/dL), using 1.6 mmol/L per 100 mg/dL glucose above 100 mg/dL. (1973)

View source