Do You Know Which Syringes Are Best For Using With The HCG Weight Loss Diet? If you are doing the HCG Hormone Injections, you will have to decide whether you are doing subcutaneous or intramuscular shots. But first you must know the difference between the two - Subcutaneous is where you inject just beneath the skin... Intramuscular is where you actually inject into the muscle. These days, it seems that most people are using the subcutaneous method. After you decide which way to do the injections, you will need to choose the right type of syringe to use. But Which Syringes Should You Use For HCG Injections? If you have recently shopped around for syringes, you've probably noticed that there are about 5 million different types to choose from. However, you need to make sure that you get the right ones. Needles are differentiated based on their length and diameter. The length of needles range from between 1/2-inch to 3 inches. The diameter of a needle is measured in g...