Key Takeaways DexCom received a warning letter from the Food and Drug Administration following inspections of two of its plants.The maker of glucose monitoring devices said investigations of its San Diego,

Medical device maker Dexcom said it has received a warning letter from the U.S. Food and Drug Administration following inspections of its two key manufacturing facilities, sending its shares down nearly 7% after the bell.

The company does not expect the warning letter to materially impact its manufacturing capacity, sales or ability to seek clearance for new products.