You can be in any one of 5 partner tiers in the Global Partner Network, depending on the number of tests you refer to us, annually.
| # of tests referred annually | Tier |
| <10 | Starter |
| 10 - 99 | Member |
| 100 - 499 | Partner |
| 500 - 1999 | Gold Partner |
| 2000 and above | Platinum Partner |
By default, everyone begins at the Starter tier. As you refer tests, you progress to higher tiers.