World number four Petra Kvitova will undergo a fresh set of tests after she suffered another bout of exhaustion during the US Open.
Kvitova was diagnosed with mononucleosis earlier this summer, but still managed to enjoyed a career-best run at Flushing Meadows as she made it to the quarter-finals before being beaten 6-4, 4-6, 2-6 by Flavia Pennetta on Wednesday.
With the US Open behind her, Kvitova will consult her doctors once again before deciding whether to participate in the upcoming tournaments in Asia.
"I’m going back to make some blood tests, to see how everything is looking right now," she told reporters. "Now I’m feeling really exhausted, so I’m really glad I can sit down now. I am going talk with the doctors again and see how everything is working, but if I’m okay I will go there (Wuhan and Beijing), for sure."
Kvitova revealed that she found it difficult to sleep prior to her quarter-final match against Pennetta and was subsequently exhausted when she stepped foot on the court.
"Actually, I couldn’t fall asleep last night, so it was kind of difficult anyway," she said. "When I heard my alarm I didn’t want to wake up. Yeah, I’m kind of sleepy right now, as well."