Characterisation of all germline variants in one or more genes known to cause hearing loss in a person, if:(a) the characterisation is requested by a specialist or consultant physician; and(b) the characterisation is for the reproductive partner of a patient with a pathogenic or likely pathogenic recessive germline gene variant known to cause hearing loss confirmed by laboratory findings; and(c) the result of the patient’s previous testing is made available to the laboratory undertaking the characterisation