Starting 4th October 2020, all International Travelers to Pakistan will require a mandatory negative COVID-19 RT-PCR test that has to be taken within 96 hours of the travel date. So our transit PCR requirement should cover. Health form and app are the new additions as well.
More details are here http://covid.gov.pk/intl_travellers/current_policies
Some EU markets are unfortunately excluded from this PCR requirement [please check list below regarding exempted countries].