Chemo can be delayed for up to a few days.

There are no data documenting delays of up to a few days for chemotherapy, which is an important means of treating malignant tumors and usually requires strict adherence to doctor recommendations and schedules. However, in some cases, patients may need to delay chemotherapy due to medical conditions, drug reactions, or other unforeseen reasons. As for the number of days chemotherapy can be delayed, generally speaking, the delay time should not be too long, usually recommended no more than 7 days to 14 days. This is because the use of chemotherapy drugs is cyclical, outdated may affect the efficacy, and thus adversely affect the treatment effect. At the same time, long delay chemotherapy may also lead to disease progression, increasing the difficulty and risk of treatment. It should be noted that the specific days of chemotherapy delay should be determined according to the specific conditions of the patient and the doctor's advice. If the patient has any discomfort or symptoms, he should contact the doctor or medical team for help. In addition, the patient should actively cooperate with the doctor for follow-up treatment and pay attention to maintaining good living habits and mentality to improve the treatment effect and quality of life. In conclusion, chemotherapy delays should be treated with caution and under the guidance of doctors as much as possible. Patients and family members should fully understand the importance and precautions of chemotherapy and actively cooperate with doctors' treatment plans to obtain the best treatment effect.