CRP and pneumonia: 1.POC CRP levels should be interpreted in combination with symptoms and signs.2.CRP <10 mg/l make pneumonia less likely, but should not be used to exclude pneumonia when the GP finds the child ill, or when duration of symptoms is <6 h.3.CRP >100 mg/l make pneumonia much more likely, however, such levels can also be caused by viral infections.4Between 10 mg/l and 100 mg/l, the likelihood of pneumonia increases with increasing CRP levels.