| Ordering diagnostic tests | |
| Cost factors | |
| Patient costs | 55 |
| Insurance policies limit testing | 48 |
| Insurance policies mandate use of a specific lab | 40 |
| Lack of comparative cost information | 39 |
| Ordering mechanisms | |
| Different test names | 20 |
| Tests not available except in a panel | 20 |
| Different tests in test panels | 18 |
| Using diagnostic tests | |
| Receiving results | |
| Results not received in a timely manner | 34 |
| Previous results are not easily available | 32 |
| Errors in results are suspected | 25 |
| Results are inconsistent with patient's symptoms | 24 |
| Report format | |
| Lab-to-lab variation in normal range | 22 |
| Lab-to-lab variation in report formats | 21 |
| Lab report format is difficult to understand | 18 |
| Not enough information in lab report | 16 |