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Revenue and Accounts Receivable Credit Concentration
 12 Months Ended
Dec. 31, 2024
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 sources: (i) Lung Diagnostic Testing, providing lung diagnostic testing services for healthcare providers associated with our five blood-based tests and (ii) Development Services, providing diagnostic testing services to biopharmaceutical, life sciences, and diagnostic companies.

Lung Diagnostic Testing revenues consist of blood-based lung 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, test type, and historical price concessions granted to groups of customers. For diagnostic test revenue, the Company estimates the transaction price, which is the amount of consideration it expects to be entitled to receive in exchange for providing services based on 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.

Development 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, achievement of contractual milestone(s) as defined in the customer agreements, or over the term of the contract which is generally expected to be completed in one year or less. Revenue for these services is recognized upon delivery of the completed test results, upon completion of the contractual milestone(s), or over the term of contract. In addition, Development Services also include amounts derived from licensing our digital sequencing technologies to our international laboratory partners. We are compensated through royalty-based payments for the licensed technology, and depending on the nature of the technology licensing arrangements and considering factors including but not limited to enforceable right to payment and payment terms, and if an asset with alternative use is created, these revenues are recognized in the period when royalty-bearing sales occur.

Revenues consisted of the following (in thousands):

 

 

Year Ended December 31,

 

 

 

2024

 

 

2023

 

Lung Diagnostic Testing

 

$

64,708

 

 

$

45,192

 

Development Services

 

 

6,615

 

 

 

3,895

 

Total revenue

 

$

71,323

 

 

$

49,087

 

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. The Company had $0.3 million in ‘Deferred revenue’ recorded in the balance sheet as of December 31, 2023 and $1.3 million was added throughout 2024 to ‘Deferred revenue’ for up-front cash payments received while $0.9 million was recognized in 'Revenues' during the year ended December 31, 2024. The ‘Deferred revenue’ of $0.7 million recorded in the balance sheet as of December 31, 2024 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, 2024 and 2023, the Company had $0.2 million and $0.3 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,

 

 

 

2024

 

 

2023

 

United Healthcare

 

 

7

%

 

 

10

%

In addition to the above table, we collect reimbursement on behalf of customers covered by Medicare, which accounted for 39% and 43% of the Company’s total revenue for the years ended December 31, 2024 and 2023, respectively.

The Company is subject to credit risk from its accounts receivable related to services provided to its customers. 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, 2024

 

 

December 31, 2023

 

Medicare

 

 

21

%

 

 

21

%

Daiichi Sankyo

 

 

14

%

 

 

8

%