Wash. Admin. Code § 16-306-160
(5) THC concentration testing fees for hemp when tested at the department's laboratory are established on a sliding rate scale. THC concentration testing will be scheduled by the department based on the availability of laboratory resources. Individual samples may be batched with samples from the same or different licensees in order to reduce the overall cost of the testing. For the purposes of this section, "batch" means a group of samples that are tested by the department on the same day, using the same equipment calibration and testing supplies to test each sample independently from other samples in the batch. The department will bill each licensee for the samples that licensee provides, based on batch size at the time of testing as shown in the following table:
| Batch Size | Testing Fee Per Sample |
| Batch of 1 sample | $1,000 |
| Batch of 2 samples | $500 |
| Batch of 3 samples | $334 |
| Batch of 4 samples | $250 |
| Batch of 5 samples | $200 |
[Statutory Authority: RCW 15.140.030 and chapter 34.05 RCW. WSR 20-03-174, § 16-306-160, filed 1/22/20, effective 2/22/20.]