My father has always had a few symptoms (low tolerance to heat/sun exposure suggests high saline sweat, non-proper digestion, mild respiratory issues) but he was tested carrier, "carrier with symptoms" they said in the early 20s. My aunt (father's side) has had a couple respiratory symptoms but is otherwise asymptomatic. My uncle (mother's side) has the full sheebang of symptoms (digestive, "asthma", recurrent infections, even wide fingers) but has been tested twice as just a carrier.
Ie, you may be a carrier with symptoms but be tested negative.
Ie, you may be a carrier with symptoms but be tested negative.