at-home health check; do-it-yourself health check
Refers to a health checkup conducted at home, often using self-testing kits or telemedicine.
You can easily check your health at home using an at-home health check kit.
健康診断 is a general health examination, often done at a medical facility, while 在宅健診 specifically refers to a health check performed at home.
Compound of 在宅 (ざいたく, 'at home') and 健診 (けんしん, 'health checkup').