Uzbek Ismailov fails doping test
"The player's urine sample was consequently analysed by the Ankara Doping Control Laboratory... and revealed the presence of the substance Tethrahydrocannabinol Metabolite, a prohibited substance," said FIFA in a statement.
FIFA said the ban would apply at both national and international level.
Bahrain won the match 1-0.
Ismailov, 24, was a regular in Uzbekistan's qualifying campaign for next year's finals. The Uzbeks finished bottom of their group in the final round of the Asian qualifiers.