They're a lab that takes samples, they do no medical analysis, they do sample analysis then send it to people whom are qualified. The average Lifelabs worker is a phlebotomist, and last time I checked, your sex, gender, skin colour, height, age doesn't make blood somehow different in any respect as to how you handle it.

Pull your head out of your ass.

This article (scientificamerican.com) contains a really nice graphic illustrating all the various reasons why looking at gender in binary is flawed from the get-go. Much more useful to understand the person individually; respecting pronouns being just the tip of the iceberg of that.

1. People don't stop having a gender just because they're in a doctor's office. Gender-affirming care starts with treating people like themselves.

2. "Sex" is not always a "one or the other" situation, if you assume that all cis women have ovaries then you're going to be wrong about every cis women with a hysterectomy. The actual medical best-practice is an anatomical inventory.

The problem often to me comes from wrongful abstraction of social markers by people educated in the life sciences. Most individuals coming from the STEM sector tend to align right due to the fundamentalist fatalist perception education in the sciences procurs. The issue is they lack the self-awareness to realize that they are not educated sufficiently on social topics.