The new arrival who just collected the keys
Vitamin D deserves special mention because it is the great UAE paradox: a country with year-round sun where the majority of residents test deficient or insufficient. The reasons are mundane — air-conditioned indoor life, cars, covered clothing, and deliberate sun avoidance from May to September. If you have been here more than six months and have never tested it, assume nothing about your level. Deficiency is common enough that many doctors here check it as routinely as cholesterol.
New arrivals also face a practical snag: no local doctor yet. If anything in the panel comes back flagged, you want a GP appointment within a week or two, not a screenshot sitting in your camera roll for six months. Booking through an app like tamam helps here mainly because you can compare several licensed home-healthcare vendors with their AED ranges side by side before you know which names are reputable, rather than gambling on the first search result in a country you moved to last month.