In recent years, based on the clinical value of white blood cell (WBC) + C-reactive protein (CRP) + serum amyloid A (SAA) detection in the diagnosis of infantile infection, many famous pediatric experts have proposed "three new routine tests", namely, white blood cell (WBC) + C-reactive protein (CRP) + serum amyloid A (SAA). It has been widely used and recognized. The results showed that the total positive rate of SAA in various inflammatory diseases was 8.54% higher than that of CRP. Combined SAA and CRP test can more accurately diagnose the type of infection and monitor the course of infection
Detection range | sample size | Sample type | Test time | |
CRP | SAA | 5μl | Whole blood / serum / plasma | 3min |
0.5~200mg/L | 5~200mg/L |
SAA normal CRP was normal | SAA normal Elevated CRP | SAA increased CRP was normal | SAA increased Elevated CRP |
Consider non-infectious factors | The disease is improving | Consider virus infection | Consider bacterial infection |
Continue treatment based on clinical symptoms or continue to monitor SAA and CRP until they return to normal | Continue treatment based on clinical symptoms or continue to monitor SAA and CRP to return to normal | Antiviral treatment; monitor SAA and CRP to return to normal or consider changing the treatment plan | Antibiotic treatment, monitor SAA and CRP to return to normal or consider changing the treatment plan |
Laboratory, infection, fever clinic, pediatrics, cardiology, organ transplantation, etc