After weaning slowly women will return to milk, there is no residual milk, after returning to milk lactin will gradually decline, and there is no need to judge lactin. If you want to check lactogen, you can directly draw blood to check, there is no other way to judge. After women do not breastfeed, you can naturally return to milk, but also through the fried malt, vitamin B6 and other drugs to return to milk, the use of specific drugs need to follow the doctor’s advice. Lactogen will also gradually decline after returning to milk, and women will no longer lactate. The milk in the breast will gradually be absorbed by itself and there will be no residual milk. After the next pregnancy, the breasts will develop again and produce milk. There is no need to check lactogen when a woman returns to breastfeeding. The changes in the body after weaning are a normal physiological process, and women do not need to worry too much, as the breasts will naturally return to normal after a period of time. If a woman wants to check her lactogen, she can go to the hospital for a checkup.