As states in the U.S. move past the initial push for tests to identify active COVID-19 infections, antibody tests are ramping up quickly to aid in disease surveillance and return-to-work screenings. The rush has spurred an explosion in serology tests, many hastily developed and of questionable value. However, as the pandemic enters its third month, some companies are offering high-accuracy tests with validated results.

The COVID-19 pandemic has shaken the world – and the face of diagnostics. In a matter of weeks, a host of companies has worked to develop tests to find those patients who currently have the disease, as well as those who have developed antibodies.

Brisbane, Calif.-based Caredx Inc. has reported a strategic alliance with Weill Cornell Medicine that makes the company the exclusive development and commercialization partner for Uromap, a urine-based gene-expression test for acute cellular rejection in kidney transplant recipients.

Palo Alto, Calif.-based Varian Medical Systems Inc. has joined the ranks of other companies in withdrawing its guidance even as at least one analyst saw positive news for the second quarter. For her part, BTIG’s Marie Thibault noted that the company missed on Americas oncology gross order metric, while falling short on consensus non-GAAP earnings per share (EPS) by five cents.

Saudi Arabia, which last year made its first appearance on the U.S. Trade Representative’s (USTR) Priority Watch List, is back on the list this year and is being singled out for an out-of-cycle review due to what the USTR calls its “unfair commercial use” and “unauthorized disclosure” of proprietary data submitted for drug approvals.

While many biopharma companies are holding the line on U.S. drug prices during the COVID-19 pandemic, a few are providing more fuel to fire up lawmakers over prescription drug prices. The latest flames were stoked by last month’s 220% increase in the price of Jaguar Health Inc.’s Mytesi (crofelemer), a botanical drug used to treat the gastrointestinal side effects of HIV antiretroviral treatments. Two days after the FDA denied an emergency use authorization (EUA) for the drug to be used to treat diarrhea in COVID-19 patients who were given antivirals, Jaguar raised the price of Mytesi from $688.52 per bottle to $2,206.52 per bottle.

The capacity of U.S. medical providers and testing capacity for the unfolding COVID-19 pandemic continues to be sorely tested. But there is now a new route for people to pursue serological testing to detect who has already been exposed to the SARS-CoV-2 virus.

Despite a drop off in elective procedures due to the COVID-19 pandemic, Stryker Corp., of Kalamazoo, Mich., unveiled first-quarter results that came in better than analysts had presumed. BTIG’s Ryan Zimmerman noted that, unlike other companies, Stryker did not pre-announce preliminary revenue. And while investors were concerned that the company would be adversely affected by the slump in elective procedures, "the diversity of the portfolio helped to offset procedure declines in late March.”

Hologic Inc., of Marlborough, Mass., is introducing another tool to help combat COVID-19, revealing the impending launch of a new Aptima molecular assay to detect the SARS-CoV-2 virus that will run on its Panther system. The company expects to be able to provide its lab customers with about 3 million Aptima tests next week. In addition, it anticipates producing about 1 million tests a week starting late next month.