Global circulating tumor cell (CTC) diagnostics market is segmented by region into North America, Europe, Asia Pacific, Middle East & Africa and South & Central America. In North America, the U.S. is the largest market for sleep apnea diagnostics. The market growth in the country is attributed to the factors such as most foreign companies in the healthcare sector have R&D centres in the United States. Moreover, the increase in prevalence of cancer in the country along with various organic and inorganic developments done by the companies. And, Asia Pacific is the fastest-growing region growing at the CAGR of 10.3% during the forecast period. ..Read more