It is my understanding that progesterone levels Fluctuate greatly - and so it will depend on which cycle day the blood was drawn for the test. It might be helpful for future posters to know, if you happen to know -- what day in your cycle the test was done and perhaps how long that cycle was.
For info on hormonal levels - what is normal and a brief explanation, Try this:
http://www.fertilityplus.org/faq/hormonelevels.html -- also please notice at the bottom there is a picture/chart that shows how hormones fluctuate during a
normal cycle