Curb

Health

Curb is a fast, free health calculator. Enter Confusion (new disorientation), BUN > 19 mg/dL and RR ≥ 30/min to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser.

Formula

CURB-65: Confusion + Urea + RR + BP + Age ≥65. Each = 1 pt. 0–1: outpatient; ≥3: hospital.
  • CURB-65: Confusion + Urea + RR + BP + Age ≥65. Each = 1 pt. 0–1: outpatient; ≥3: hospital. — for clinical reference only.

CURB Score Example

Inputs
  • Confusion (new disorientation): 0
  • BUN > 19 mg/dL: 0
  • RR ≥ 30/min: 0
  • SBP < 90 or DBP ≤ 60 mmHg: 0
  • Age ≥ 65: 1

Patient 65+, no confusion, normal labs/vitals → score 1 = low risk.

Frequently asked questions

What does CURB stand for?
Confusion, Urea >19 mg/dL, Respiratory Rate ≥30, Blood Pressure low, age ≥65. Each criterion = 1 point.
What do the risk levels mean?
0-1: low (outpatient); 2: moderate (consider admission); ≥3: high (hospital/ICU). Follow clinical guidelines.
Is this validated?
Yes, CURB-65 is based on published clinical systems. Always confirm with current guidelines and medical expertise.
Can this replace a doctor?
No. This is a screening tool only. A healthcare professional must evaluate and provide diagnosis.