Whooping Cough Tests Test
A whooping cough test uses fluid from your nose to help diagnose whooping cough (pertussis), a serious bacterial infection that causes severe coughing fits.
What this test measures
The test looks for the bacteria that cause whooping cough (Bordetella pertussis) in a sample of fluid from your nose. Different methods include culture, PCR, and antibody tests.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Higher-than-normal results
A positive result on a culture or PCR test means you have whooping cough. For PCR, a positive result means genetic material from the bacteria was found, but it could be from related bacteria.
Lower-than-normal results
A negative result may mean you don't have whooping cough, but it doesn't rule it out. The sample may have been taken too late, or you may have taken antibiotics before the test.
Frequently asked questions
What is whooping cough?
Whooping cough is a serious bacterial infection in your respiratory system that causes severe fits of rapid coughing. The coughing may last until all air is gone from your lungs, causing a 'whooping' sound.
How is the test done?
The test usually uses fluid from your nose to check for the bacteria that cause whooping cough.
What does a positive PCR test mean?
A positive PCR test means genetic material from the whooping cough bacteria was found, and you probably have whooping cough. However, it could be from other related bacteria.
Can a negative test rule out whooping cough?
No, a negative test does not completely rule out whooping cough. The sample may not have had enough bacteria, or it was taken too late.
How is whooping cough treated?
Whooping cough is treated with antibiotic medicine. Starting treatment early can make the infection less serious and help prevent spreading it to others.
Related lab tests
Sources
- MedlinePlus: Whooping Cough Tests — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.