Blackstenius will not play in today's league match against Liverpool. According to reports close to Arsenal, her heel injury requires further examinations before its extent can be determined.
The 30-year-old Blackstenius has scored 47 international goals and is a key player for Sweden as the team chases a place at next summer's World Cup in Brazil.
Scotland is the final obstacle. The first match will be played away on December 1, with the return leg on December 5 at 3 Arena in Stockholm.
It remains to be seen whether Stina Blackstenius will be in the squad then.
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