| Clue | Source | Date |
|---|---|---|
| Providers of positive or negative results | Wall Street Journal | 02 Apr 2025 |
| Covid diagnosis tools | Wall Street Journal | 05 Feb 2024 |
| Aids for determining pregnancy, e.g | New York Times | 25 Nov 2018 |
| Aids for determining pregnancy, e.g. | ||
| At-home radon detectors, e.g. | ||
| Pool accessories |