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Purple fingernails since overexercising

Hi, please tell me what can have caused my fingernails to get purple/bluish after one day of running much more than I was used, on July 14th. Since then, my fingernails stayed purple/bluish.
I have gone through EKG, echo, xray, CT scan, blood work and spirometry test, all came back normal. What other tests can I take?
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Avatar universal
Hi, can you tell me what other tests can I get to find out the problem? And if my fingernails are purple all the time, (they have been purple since July 14th) is it still Raynaud's?
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144586 tn?1284666164
Fingernails turn blue/purple because of a lack of oxygen. This can be cardiogenic or caused by anemia or certain circulatory diseases (Raynaud's).
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