The Vel weak phenotype is due to a heterozygous deletion in the same exon, resulting one functional copy of the SMIM1 gene. If a patient who is Vel negative is transfused with Vel positive red blood cells, they may form anti-Vel alloantibodies.
Hearing aids need to be fitted by someone trained specifically in hearing problems. An audiologist or licensed hearing aid provider can make sure your hearing aids fit and work for your type and degree of hearing loss. You also need to consider cost.
Hearing aid service providers must provide hearing aids under the terms of the volume purchase contract. If the audiologist prescribes a non-contract hearing aid, the hearing aid service provider must obtain authorization by providing either: â¢ Reasons the contract aids will not meet the recipient's needs; or.