It was not a subscription when I did it a year or two ago, but I guess the one-off model may not have worked out. I work in this field and the economics of doing something like this with a D2C model in Canada are not great. People are just not used to exchanging money for healthcare.

subscription model makes sense, unfortunately

if you're doing a one-off, it's almost certainly part of a checkup or otherwise ordered by a doctor. any followups will be under their care too

if you're like me, with a longer term health condition that requires periodic measurement, then this actually makes a ton of sense