The screening checks if there are HIV antibodies (produced by your immune system to defend you against the virus) in your blood.
Upimaji huangalia ikiwa kuna kingamwili za virusi vya Ukimwi. Hizi kingamwili zinazozalishwa na mfumo wako wa kinga ili kujaribu kukulinda dhidi ya virusi. Zinakuwa katika damu yako.