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Segment information - Results of each reportable segment (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) segment | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Disclosure of operating segments [line items] |  |  |
Number of reportable segments | segment | 2 |  |
Revenue | $ 275,761,298 | $ 275,852,753 | $ 65,179,515
Gross profit | 131,554,886 | 106,131,211 | 26,344,819
Prevention |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | 15,774,457 | 16,571,535 | 14,264,972
Gross profit | 6,538,453 | 7,546,593 | 6,332,833
Diagnostics |  |  |
Disclosure of operating segments [line items] |  |  |
Revenue | 259,986,841 | 259,281,218 | 50,914,543
Gross profit | 127,180,380 | 100,125,889 | 20,983,200
Unallocated |  |  |
Disclosure of operating segments [line items] |  |  |
Gross profit | $ (2,163,947) | $ (1,541,271) | $ (971,214)

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