A-DROP
A-DROP: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.
A-DROP
Male sex (1 = yes)
Ageyears
Blood ureammol/L
Clinical signs of dehydration (1 = yes)
SpO₂%
Confusion (1 = yes)
Systolic BPmmHg
Shock (1 = yes)
A-DROP
0points
Severity
Mild
Management
Outpatient treatment
More about: A-DROP
What it calculates
The “A-DROP” calculator computes A-DROP in points from 8 parameters: male sex (1 = yes), age (years), blood urea (mmol/L), clinical signs of dehydration (1 = yes), spo₂ (%), confusion (1 = yes), systolic bp (mmHg), shock (1 = yes).
Used by professionals and patients to assess health metrics, dosages, and risks.
Example calculation
With parameters Male sex (1 = yes) = 1, Age = 60 years, Blood urea = 5 mmol/L, Clinical signs of dehydration (1 = yes) = 0, SpO₂ = 95 %, Confusion (1 = yes) = 0, Systolic BP = 120 mmHg, Shock (1 = yes) = 0 the result is 0 points.
How to use
- Enter male sex (1 = yes), age, blood urea, clinical signs of dehydration (1 = yes), spo₂, confusion (1 = yes), systolic bp and shock (1 = yes) — each field above is adjustable with a slider.
- A-DROP (points) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.
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