AAR/AAT Schedule
| Date | Event |
| 05/01/2026 | AAR Annual Fees Due! |
| 05/08/2026 | AAT 157 Retest Orders Due |
| 05/11/2026 | AAT 157 Retest Samples Ship |
| 06/01/2026 | AAT 157 Retest Results Due |
| 06/02/2026 | AAT 158 Final Enrollment Deadline for Analyst additions requiring additional AAT samples. |
| 06/05/2026 | AAT 157 Retest Results Post |
| 6/10/2026 | AAT 158 Samples Ship ~6/1; Contact us if your samples have not been received. |
| 7/1/2026 | AAT 158 Final Enrollment Deadline for Analyst additions requiring no additional AAT samples. |
| 7/10/2026 | AAT 158 Results Due |
| 7/24/2026 | AAT 158 Results Post (available online no later than this date). |
| 8/7/2026 | AAT 158 Retest Orders Due |
| 8/10/2026 | AAT 158 Retest Samples Ship |
| 9/1/2026 | AAT 158 Retest Results Due |
| 9/2/2026 | AAT 159 Final Enrollment Deadline for Analyst additions requiring additional AAT samples. |
| 9/10/2026 | AAT 159 Samples Ship ~9/1; Contact us if your samples have not been received. |
| 9/16/2026 | AAT 158 Retest Results Post (available online no later than this date). |
| 10/1/2026 | AAT 159 Final Enrollment Deadline for Analyst additions requiring no additional AAT samples. |
| 10/9/2026 | AAT 159 Results Due |
| 10/23/2026 | AAT 159 Results Post (available online no later than this date). |
| 11/6/2026 | AAT 159 Retest Orders Due - Online Orders are now available in the Registry Portal! |
| 11/9/2026 | AAT 159 Retest Samples Ship |
| 12/2/2026 | AAT 159 Retest Results Due |