Table 4.
Sample Sizes Required for Serology Testing
| Prevalence | Precision (95% Confidence Interval) | No. of Random Sample Tests Required |
|---|---|---|
| 1% | 0.6%-1.4% | 5,170 |
| 5% | 4.0%-6.0% | 2,337 |
| 10% | 8.0%-12.0% | 1,013 |
| 20% | 16%-24% | 432 |
| 40% | 35%-45% | 413 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.