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REVENUE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 2,499,766	$ 2,084,279	$ 1,767,087
Screening
Disaggregation of Revenue [Line Items]
Revenue recognized	1,864,701	1,424,703	1,062,308
Screening | Medicare Parts B & C
Disaggregation of Revenue [Line Items]
Revenue recognized	701,400	545,458	438,646
Screening | Commercial
Disaggregation of Revenue [Line Items]
Revenue recognized	992,244	743,238	569,944
Screening | Other
Disaggregation of Revenue [Line Items]
Revenue recognized	171,057	136,007	53,718
Precision Oncology
Disaggregation of Revenue [Line Items]
Revenue recognized	629,110	601,488	561,676
Precision Oncology | Medicare Parts B & C
Disaggregation of Revenue [Line Items]
Revenue recognized	188,689	197,327	197,394
Precision Oncology | Commercial
Disaggregation of Revenue [Line Items]
Revenue recognized	181,318	177,518	180,177
Precision Oncology | Other
Disaggregation of Revenue [Line Items]
Revenue recognized	105,826	108,905	74,192
Precision Oncology | International
Disaggregation of Revenue [Line Items]
Revenue recognized	153,277	117,738	109,913
COVID-19 Testing
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 5,955	$ 58,088	$ 143,103

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