It took a while, but Durham animal science startup Advanced Animal Diagnostics has closed on a new round of financing.

In a securities filing, AAD says it has raised just over $3.5 million in equity from a mix of 10 investors.

Back in March, the company disclosed the start of the new round, saying it had closed on just over $1.7 million of a targeted $3.43 million.

AAD also says it doesn’t anticipate the funding to last more than one year.

last December, AAD raised $15 million.

The company develops products that diagnose livestock diseases. It says its technology creates more precise care of animals so they live healthier, more productive lives.

The company’s website says “With powerful diagnostic technology, we can detect diseases earlier so producers can take action earlier – and prevent losses. In the dairy industry, our QScout MLD test detects subclinical mastitis infections before losses occur.”

AAD, previously a member of BD Technologies Bioventure Center incubator in the Research Triangle Park, was founded in 2001.