Segment information

12 Months Ended

Dec. 31, 2022

Disclosure of operating segments [abstract]

5	Segment information

A.	Basis for segmentation

The Group manages its businesses by divisions, which are organized by a mixture of both business lines (products and services) and geographical locations. The Group has identified the following two reportable segments in a manner consistent with the way in which information is reported internally to the Group’s chief operating decision maker (“CODM”) for the purposes of resource allocation and performance assessment.

The Group’s operating and reportable segments are

as follows:

Prevention being the design and sale of genetics testing (including update services) and stool-based DNA tests for early colorectal cancer screening.

Diagnostic being the sale of

COVID-19

testing services and products, and precision oncology services.

B.	Information about reportable segment

Information related to each reportable segment is set out below. Performance is measured based on gross profit, as included in the internal management reports that are reviewed by the CODM. The CODM does not evaluate operating segments using asset information.


	Prevention		Diagnostics		Unallocated			Total
	$		$		$			$
2022
Revenue		15,774,457		259,986,841		—			275,761,298
Gross profit		6,538,453		127,180,380		(2,163,947	)		131,554,886
2021
Revenue		16,571,535		259,281,218		—			275,852,753
Gross profit		7,546,593		100,125,889		(1,541,271	)		106,131,211
2020
Revenue		14,264,972		50,914,543		—			65,179,515
Gross profit		6,332,833		20,983,200		(971,214	)		26,344,819

The following table presents a summary of revenue by region based on the location of domiciliation and the amounts of

non-current

assets based on the location of the asset. The Group geographically categorizes a sale based on the region in which the entity is domiciled in.

C.	Geographic information

(i)

Revenue

Revenue by regions were as follows:


	2022		2021		2020
	$		$		$
Hong Kong		210,934,144		124,926,420		35,411,518
United Kingdom		64,827,154		150,926,333		29,767,997

Total revenue		275,761,298		275,852,753		65,179,515

(ii)	Non-current assets

Non-current

assets (excluding interests in associates and deferred tax assets) by regions were as follows:


	2022		2021		2020
	$		$		$
Hong Kong		67,151,416		10,993,322		3,419,570
United Kingdom		1,816,121		30,334,739		29,510,377
Rest of the world		321,456		207,026		45,460

Total non-current assets		69,288,993		41,535,087		32,975,407

D.	Major customers

For the years ended December 31, 2022 and 2021, the Group’s customer base includes the same

two

customers with whom transactions individually have exceeded

% of the Group’s revenue for the respective periods. The revenue from these two customers accounted for approximately

28% and 27

% of the Group’s revenue for year ended December 31, 2022 and approximately

14% and 11

% of the Group’s revenue for year ended December 31, 2021.

For the year ended December 31, 2020, the Group’s customer base includes

two customers with whom transactions individually have exceeded 10% of the Group’s revenue. The revenue from these two customers accounted for approximately 20% and 20% of the Group’s revenue, respectively.