VO2 Max testing is available in Singapore at the Changi Sports Medicine Centre. At the end of the test, a doctor will sit down with you to validate the findings (or give you his input) to give you your optimum training zones.
From now until the end of May, they are having a special on it. About SGD$82, I think. The regular price is SGD$120. Give your training a boost and call them to make an appointment.
VO2 Max Me Up! Taken by Laura Koh with a Canon Ixus 850 IS.