REVENUE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 628,338	$ 523,073	$ 1,852,881	$ 1,531,284
Screening
Disaggregation of Revenue [Line Items]
Revenue recognized	472,013	360,759	1,377,995	1,021,175
Screening | Medicare Parts B & C
Disaggregation of Revenue [Line Items]
Revenue recognized	173,624	140,366	521,370	389,373
Screening | Commercial
Disaggregation of Revenue [Line Items]
Revenue recognized	253,401	188,923	732,182	531,789
Screening | Other
Disaggregation of Revenue [Line Items]
Revenue recognized	44,988	31,470	124,443	100,013
Precision Oncology
Disaggregation of Revenue [Line Items]
Revenue recognized	156,325	151,443	468,931	458,058
Precision Oncology | Medicare Parts B & C
Disaggregation of Revenue [Line Items]
Revenue recognized	46,383	47,038	141,352	152,224
Precision Oncology | Commercial
Disaggregation of Revenue [Line Items]
Revenue recognized	44,430	42,660	135,574	134,658
Precision Oncology | International
Disaggregation of Revenue [Line Items]
Revenue recognized	38,599	31,533	111,453	89,536
Precision Oncology | Other
Disaggregation of Revenue [Line Items]
Revenue recognized	26,913	30,212	80,552	81,640
COVID-19 Testing
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 0	$ 10,871	$ 5,955	$ 52,051