Asthma Control Test (ACT)
The Asthma Control Test, five patient-rated items about the past four weeks.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- 1. Asthma limiting activity at work, school, or home
- 4
- 2. Shortness of breath
- 3
- 3. Nighttime or early-morning awakenings from asthma
- 3
- 4. Rescue inhaler or nebulizer use
- 3
- 5. Self-rated asthma control
- 4
Result: Asthma Control Test 17 of 25: not well controlled.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Each item
- Scored 1 to 5 over the past four weeks; 5 is always the best answer.
- 25
- Totally controlled.
- 20 to 24
- Well controlled.
- 19 or less
- Not well controlled.
What you enter
- 1. Asthma limiting activity at work, school, or home (past 4 weeks)
- 2. Shortness of breath (past 4 weeks)
- 3. Nighttime or early-morning awakenings from asthma (past 4 weeks)
- 4. Rescue inhaler or nebulizer use (past 4 weeks)
- 5. Self-rated asthma control (past 4 weeks)
Full field descriptions
- 1. Asthma limiting activity at work, school, or home (past 4 weeks) [1 - all of the time; 2 - most of the time; 3 - some of the time; 4 - a little of the time; 5 - none of the time]
- 2. Shortness of breath (past 4 weeks) [1 - more than once a day; 2 - once a day; 3 - 3 to 6 times a week; 4 - once or twice a week; 5 - not at all]
- 3. Nighttime or early-morning awakenings from asthma (past 4 weeks) [1 - 4 or more nights a week; 2 - 2 or 3 nights a week; 3 - once a week; 4 - once or twice; 5 - not at all]
- 4. Rescue inhaler or nebulizer use (past 4 weeks) [1 - 3 or more times per day; 2 - once or twice per day; 3 - 2 or 3 times per week; 4 - once a week or less; 5 - not at all]
- 5. Self-rated asthma control (past 4 weeks) [1 - not controlled at all; 2 - poorly controlled; 3 - somewhat controlled; 4 - well controlled; 5 - completely controlled]
How this is calculated
Nathan RA, Sorkness CA, Kosinski M, et al. Development of the Asthma Control Test: a survey for assessing asthma control. J Allergy Clin Immunol. 2004;113(1):59-65. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.