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Segment information (Tables)

12 Months Ended

Dec. 31, 2022

Disclosure of operating segments [abstract]

Schedule of results of each reportable segment


		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

Schedule of revenue and non-current assets by regions

(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