High CPK Levels in Blood Test? - Due to Tri Training?

You can go Google CPK, and get some hits, read the first few.  It is a test for Creatininne PhosphoKinase ... a certain enzyme .... and usually is elevated a few hours after a heart attack .... and in other situations ...

Anyhow, I just got a call from a doctor about my high CPK levels, it was a 424 and the upper limit for normal is 195 ....  could this be from all the training I've done lately? 

Anyone else get high CPK levels from any of their blood test results while in training?

Some links:

Here is a link to an article:

http://www.nlm.nih.gov/medlineplus/ency/article/003503.htm

..and another similar:

http://www.lifespan.org/adam/healthillustratedencyclopedia/1/003504.html

Long-distance running and CPK:

http://query.nytimes.com/gst/fullpage.html?res=940DE2DC1730F933A05753C1A9679C8B63

Also another link from a Dr. Mirkin website where he talks about muscle soreness:

http://www.drmirkin.com/fitness/1346.html

Another interesting link:

http://www.lehigh.edu/~dmd1/kidney.html