Will a coronary cta with calcium score show if i have pad?

No: Coronary CTA with calcium has been validated to show coronary artery disease. Often an assumption is made that significant coronary disease also correlates to peripheral artery disease but coronary CTA does not have predictive value for PAD. For PAD, a peripheral artery CTA would be suggested based on symptoms. Similarly a negative coronary CTA does not negate PAD.

CAD often = PAD: Calcium score of the coronary arteries indicates some degree of atherosclerosis or hardening of the arteries. The CTA does not specifically look at the rest of the body i.e. legs, neck, etc. However atherosclerosis is usually a systemic disease such that if there is CAD there is likely some degree of peripheral arterial disease (PAD) also.