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Revenue and Accounts Receivable Credit Concentration | 12 Months Ended
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Dec. 31, 2021
Revenue From Contract With Customer [Abstract] |
Revenue and Accounts Receivable Credit Concentration | Note 11 – Revenue and Accounts Receivable Credit Concentration We derive our revenue from two primary sources: (i) providing diagnostic testing in the clinical setting (Diagnostic Tests); and (ii) providing biopharmaceutical companies with services that include diagnostic research, clinical research, clinical trial testing, development and testing services generally provided outside the clinical setting and governed by individual contracts with third parties as well as development and commercialization of companion diagnostics (Services). Diagnostic test revenues consist of blood-based lung tests and COVID-19 tests, which are recognized in the amount expected to be received in exchange for diagnostic tests when the diagnostic tests are delivered. The Company conducts diagnostic tests and delivers the completed test results to the prescribing physician or patient, as applicable. The fees for diagnostic tests are billed either to a third party such as Medicare, medical facilities, commercial insurance payers, or to the patient. The Company determines the transaction price related to its diagnostic test contracts by considering the nature of the payer, historical price concessions granted to groups of customers, and its historical collection experience using a portfolio approach. The Company recognizes revenues for diagnostic tests upon delivery of the tests to the physicians requesting the tests or patient, as applicable. Services revenue consists of on-market tests, pipeline tests, custom diagnostic testing, and other scientific services for a purpose as defined by any individual customer, which is often with biopharmaceutical companies. The performance obligations and related revenue for these sales is defined by a written agreement between the Company and the customer. These services are generally completed upon the delivery of testing results, or other contractually defined milestone(s), to the customer. Revenue for these services is recognized upon delivery of the completed test results, or upon completion of the contractual milestone(s). Revenues consisted of the following (in thousands):
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |
Diagnostic tests |  | $ | 48,937 |  |  | $ | 40,919 |
Services |  |  | 5,569 |  |  |  | 4,638 |
Total revenue |  | $ | 54,506 |  |  | $ | 45,557 |
Deferred Revenue Deferred Revenue consists of cash payments from customers received in advance of delivery. As test results are delivered, the Company recognizes the deferred revenue in ‘Revenues’ in the statements of operations. Of the $3.5 million in ‘Deferred Revenue’ recorded in the balance sheet as of December 31, 2020, $3.0 million was recognized in revenues. During the year ended December 31, 2021 $1.4 million was added to 'Deferred revenue' for up-front cash payments received for which revenue recognition criteria have not been met. The 'Deferred revenue' of $1.9 million recorded in the balance sheet as of December 31, 2021 is expected to be recognized in revenues over the next twelve months as test results are delivered and services are performed. As of December 31, 2021 and 2020, the Company had $0.8 million and $1.4 million in non-current deferred revenue, respectively, recorded within ‘Other long-term liabilities’ in the balance sheets which represent amounts to be recognized in excess of twelve months from the respective balance sheet date. The Company’s customers in excess of 10% of total revenue, and their related revenue as a percentage of total revenue were as follows:
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |
The Big Ten Conference |  |  | 40 | % |  |  | 30 | %
Centura Healthcare |  |  | 5 | % |  |  | 17 | %
In addition to the above table, we collect reimbursement on behalf of customers covered by Medicare, which accounted for 18% and 17% of the Company’s total revenue for the years ended December 31, 2021 and 2020, respectively. The Company is subject to credit risk from its accounts receivable related to services provided to its customers. The Company does not perform evaluations of customers' financial condition and does not require collateral. The Company’s third-party payors and other customers in excess of 10% of accounts receivable, and their related accounts receivable as a percentage of total accounts receivable were as follows:
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
Medicare |  |  | 30 | % |  |  | 6 | %
Janssen Research and Development, LLC |  |  | 14 | % |  |  | 5 | %
LabCorp DD (formerly Covance) |  |  | 11 | % |  |  | 2 | %
The Big Ten Conference |  |  | — | % |  |  | 35 | %
Centura Healthcare |  |  | — | % |  |  | 24 | %

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045 + Details
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