Chromsomal array testing had a higher diagnostic yield in the study than standard procedures, and could have value as a first step before referring patients to further tests.
The company also plans to submit its Panorama Microdeletion NIPT for US Food and Drug Administration clearance.
The San Carlos, California-based molecular diagnostic company reported total revenue of $45.1 million in Q2, up from $35.8 million in Q2 2014.
The change makes Anthem one of the first major payors to say that NIPT is medically necessary for the non-high-risk pregnancy population.
The bank said Natera's SNP-based NIPT technology would give it an advantage as it seeks to gain share in the average-risk pregnancy market.
The company provided preliminary 2015 revenue guidance of $175 million to $190 million.
The goal is to detect both clonal and subclonal variations and to demonstrate how Natera's technology can help improve cancer patient care and treatment outcomes.
The $180 million offering is well above the firm's initial target for proceeds of $100 million.
The firm said in an SEC document that it plans to offer 6.25 million shares and expects net proceeds of up to $103.3 million.
In addition to offering NIPTs, Natera is eyeing the cancer diagnostics space.
Technology Review reports that 2017 was the year of consumer genetic testing and that it could spur new analysis companies.
A phylogenetic analysis indicates two venomous Australian spiders are more closely related than thought, the International Business Times reports.
In Science this week: CRISPR-based approach for recording cellular events, and more.
A new company says it will analyze customers' genes to find them a suitable date, though Smithsonian magazine says the science behind it might be shaky.