REVENUES (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

The Company’s revenue by segment payer groups is as follows:


	Year Ended December 31, 2025				Year Ended December 31, 2024												Year Ended December 31, 2023
	North America		Europe		Other		Total		North America		Europe		Other		Total			North America		Europe		Other		Total

Dx:
Clients	23	%	—	%	—	%	23	%	24	%	—	%	—	%	24	%		24	%	—	%	—	%	24	%
Patients	10	%	—	%	—	%	10	%	10	%	—	%	—	%	10	%		9	%	—	%	—	%	9	%
Medicare and Medicaid	8	%	—	%	—	%	8	%	8	%	—	%	—	%	8	%		8	%	—	%	—	%	8	%
Third party	37	%	—	%	—	%	37	%	36	%	—	%	—	%	36	%		36	%	—	%	—	%	36	%
Total Dx revenues	78	%	—	%	—	%	78	%	78	%	—	%	—	%	78	%		77	%	—	%	—	%	77	%

BLS:
Pharmaceutical, biotechnology, medical device, and diagnostic companies, and CROs	9	%	9	%	4	%	22	%	9	%	9	%	4	%	22	%		10	%	9	%	4	%	23	%

Total Revenues	87	%	9	%	4	%	100	%	87	%	9	%	4	%	100	%		87	%	9	%	4	%	100	%

Contract with Customer, Contract Asset, Contract Liability, and Receivable

The following table provides information about accounts receivable, unbilled services, and unearned revenue from contracts with customers:


	December 31,
	2025		2024
Dx accounts receivable	$	1,349.0	$	1,259.3
BLS accounts receivable	791.2		729.5
Less: BLS allowance for credit losses	(36.4)		(44.7)
Accounts receivable, net	$	2,103.8	$	1,944.1

Gross unbilled services	$	164.0	$	160.5
Less: reserve for unbilled services	(7.1)		(7.6)
Unbilled services, net	$	156.9	$	152.9

Accounts Receivable, Allowance for Credit Loss

BLS estimates future expected credit losses on Accounts receivable, net and Unbilled services, net over the remaining collection period of the instrument. The rollforward for the allowance for credit losses was as follows:


	Accounts Receivable, net		Unbilled Services, net		Total
Allowance for credit losses at December 31, 2023	$	32.7	$	7.5	$	40.2
Credit loss expense	14.6		0.1		14.7
Write-offs	(2.2)		—		(2.2)
Foreign currency impact	(0.4)		—		(0.4)
Allowance for credit losses at December 31, 2024	44.7		7.6		52.3
Credit loss expense	4.3		—		4.3
Write-offs	(14.3)		(0.8)		(15.1)
Foreign currency impact	1.7		0.3		2.0
Allowance for credit losses at December 31, 2025	$	36.4	$	7.1	$	43.5