9 C.F.R. § 113.9
A potency test written into the filed Outline of Production for a product shall be considered confidential information by Animal and Plant Health Inspection Service until at least two additional product licenses are issued for the product or unless use of the test is authorized by the licensee, in which case, such potency test may be published as part of the Standard Requirement for the product.
[40 FR 14084, Mar. 28, 1975, as amended at 56 FR 66784, Dec. 26, 1991]