The Company, Business Activities and Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Composition of Net Revenues Recognized Disaggregated by Source and Nature

The composition of the Company’s net revenues recognized during the three and nine months ended September 30, 2017 and 2018, disaggregated by source and nature, are as follows:

	For the three months ended September 30,				For the nine months ended September 30,
	2017		2018		2017		2018
Net revenues from contracted payers*	$	422,136	$	325,097	$	1,655,287	$	1,019,857
Net revenues from non-contracted payers		621,881		373,018		2,206,414		1,211,309
Development services revenues		67,394		63,476		211,736		159,606
Total net revenues	$	1,111,411	$	761,591	$	4,073,437	$	2,390,772

*Includes Medicare and Medicare Advantage, as reimbursement amounts are fixed and miscellaneous income from CEE-Sure blood collection tubes.

	For the three months ended September 30,				For the nine months ended September 30,
	2017		2018		2017		2018
Net commercial revenues recognized upon delivery	$	941,783	$	698,115	$	2,703,424	$	2,231,166
Development services revenues recognized upon delivery		67,394		63,476		211,736		159,606
Commercial revenues recognized upon cash collection		102,234		—		1,158,277		—
Total net revenues	$	1,111,411	$	761,591	$	4,073,437	$	2,390,772

Summary of Third-Party Payers That Represent More Than 10% of Total Net Revenues and Total Net Accounts Receivable and Their Related Percentage

The Company's third-party payers that represent more than 10% of total net revenues in any period presented, as well as their related net revenue amount as a percentage of total net revenues, during the three and nine months ended September 30, 2017 and 2018 were as follows:

	For the three months ended September 30,						For the nine months ended September 30,
	2017			2018			2017			2018
Medicare and Medicare Advantage		45	%		40	%		41	%		39	%
Blue Cross Blue Shield		16	%		9	%		17	%		14	%
United Healthcare		14	%		6	%		12	%		15	%

The Company's third-party payers that represent more than 10% of total net accounts receivable, and their related net accounts receivable balance as a percentage of total net accounts receivable, at December 31, 2017 and September 30, 2018 were as follows:

	December 31, 2017			September 30, 2018
Blue Cross Blue Shield		27	%		22	%
Medicare and Medicare Advantage		21	%		18	%
United Healthcare		15	%		11	%