The AKIN (Acute Kidney Injury Network) classification for acute kidney injury is a diagnostic and severity grading system used in patients with suspected acute kidney injury (AKI). This calculator is applicable to all patient populations, including those in the intensive care unit, hospitalized patients, and outpatients. 

The AKIN classification system is used to identify and stratify the severity of AKI based on changes in serum creatinine levels or urine output. It helps clinicians to determine the appropriate treatment strategies and predict patient outcomes. 

The AKIN classification system is not suitable for patients with chronic kidney disease or those with pre-existing renal dysfunction, as the changes in serum creatinine levels or urine output may not accurately reflect the acute changes in kidney function in these patients.

AKIN classification for acute kidney injury

# Criteria
 ## Criteria
A. Serum creatinine increase >= 0.3 mg/dL [>= 26.4 mcmol/L] or 1.5-2 times above baseline, urine output < 0.5 mL/kg/hour for > 6 hours
B. Serum creatinine increase > 2-3 times from baseline, urine output < 0.5 mL/kg/hour for > 12 hours
C. Serum creatinine increase >= 4 mg/dL [354 mcmol/L] with acute increase of at least 0.5 mg/dL [44 mcmol/L] or > 3 times from baseline, urine output < 0.3 mL/kg/hour for 24 hours or anuria for 12 hours

# Conditions
- A
- B
- C
- true