Calculates CrCl according to the Cockcroft-Gault equation.

Estimates GFR in CKD patients using serum creatinine, cystatin C, or both.

Calculates stroke risk for patients with atrial fibrillation, possibly better than the CHADS₂ Score.

Calculates mean arterial pressure.

Estimates 10-year risk of heart disease or stroke to guide management strategies.

Calculates a corrected calcium level for patients with hypoalbuminemia or hyperalbuminemia.

Calculates body mass index and body surface area.

Objectifies risk of pulmonary embolism.

Corrects the QT interval for heart rate extremes (choose from Bazett, Fridericia, Framingham, Hodges, or Rautaharju formulas).

Estimates GFR in CKD patients using creatinine and patient characteristics.

Calculates ideal body weight (Devine formula) and adjusted body weight.

Estimates risk of cardiac complications after noncardiac surgery.

Quantifies stroke severity.

Noninvasive estimate of liver scarring in HCV and HBV patients, to assess need for biopsy.

Calculates pregnancy dates from last period, gestational age, or date of conception.

Estimates cirrhosis severity.

Objectifies degree of depression severity.

Predicts 6-week risk of major adverse cardiac events in patients with chest pain.

Calculates risk of DVT based on clinical criteria.

Calculates total daily morphine milligram equivalents.

Calculates the actual sodium level in patients with hyperglycemia.

Converts steroid dosages using dosing equivalencies.

Estimates probability that pharyngitis is streptococcal, and suggests management course.

Coma severity based on Eye (4), Verbal (5), and Motor (6) criteria.

Screens for obstructive sleep apnea.

Calculates maintenance fluid requirements by weight.

Estimates risk of major bleeding for patients on anticoagulation to assess risk-benefit in atrial fibrillation care.

Rules out PE if no criteria are present and pre-test probability is ≤15%.

Quantifies end-stage liver disease for transplant planning with sodium.

Measures severity of anxiety.

Predicts ICU mortality based on lab results and clinical data.

Estimates mortality of community-acquired pneumonia to help determine inpatient vs. outpatient treatment.

Stratifies VTE risk in surgical patients, guiding prophylaxis decisions.

Calculates LDL based on total and HDL cholesterol and triglycerides.

Determines 10-year risk of heart disease or stroke and provides statin recommendations.

Determines if renal failure is due to prerenal or intrinsic pathology.

Estimates 10-year risk of heart attack in patients 30-79 years with no history of CHD or diabetes.

Defines the severity of sepsis and septic shock.

Calculates free water deficit by estimated total body water.

Evaluates states of metabolic acidosis.

The CIWA-Ar objectifies severity of alcohol withdrawal.

Approximates insulin resistance.

Predicts need for brain imaging after pediatric head injury.

Predicts risk of MI or cardiac arrest after surgery.

Estimates mortality for adult patients with community-acquired pneumonia.

Predicts risk of pulmonary complications after surgery, including respiratory failure.

Calculates expected serum osmolarity, for comparison to measured osmolarity to detect unmeasured compounds in the serum.

Estimates functional capacity.

Interprets ABG.

Estimates ICU mortality.