Accounts Receivable

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

Accounts Receivable

7. Accounts Receivable

The Company’s accounts receivable consist primarily of amounts due from biopharmaceutical customers, and from certain hospitals, cancer centers and other institutions with whom it has negotiated price per test (direct bill) relationships for tests performed using its molecular information platform. There are no accounts receivable associated with amounts that are billed to commercial third-party payors or directly to patients, because this revenue is recognized on a cash basis.

Two customer account balances consisting of $5,535,000 and $4,082,000 were greater than 10% of the total accounts receivable balance, including receivables due from Roche, representing 31% and 23%, respectively, of total accounts receivable at June 30, 2017. Three customer account balances consisting of $2,079,000, $2,007,000 and $1,319,000 were greater than 10% of the total accounts receivable balance, including receivables due from Roche, representing 20%, 20% and 13%, respectively, of total accounts receivable at December 31, 2016.