Summer is when home collection stops being a convenience and becomes the sensible default. Nobody wants to fast, drive, park and queue in August heat, and the clinical case is real as well: walking through 45-degree heat to a clinic can leave you mildly dehydrated by the time you are seated, and dehydration concentrates the sample. At home, you can fast overnight, drink water freely — plain water does not break a fast for blood testing purposes, and drinking it actually improves sample quality — and be done before the day heats up.
August is also peak leave season for healthcare staff, so field teams shrink exactly when demand from pre-travel and back-to-school testing rises. Same-day slots get scarce; booking 24 to 48 hours ahead is realistic. This is where comparing several licensed vendors in one place helps — the tamam app shows multiple verified providers with transparent AED ranges, so if your usual provider has no morning slots you can see who does without ringing around.