https://alis.alberta.ca/occinfo/occupations-in-alberta/occupation-profiles/biological-technician/Same situation for me , on demand job experience, sister in canada but still no Noi. Is it like the noc code is use for a draw once a year? Like if the recent draw was for 22221 they wont target 22221 again later this year?
In this link it shows your said NOC low in demand, maybe one of the reason but you never know.