According to NPCDCS guidelines, which of the following is the recommended screening interval for diabetes mellitus in asymptomatic individuals aged 30–40 years with no risk factors?

Explanation

## NPCDCS Screening Guidelines for Diabetes **Key Point:** Under the National Programme for Prevention and Control of Cancer, Diabetes, Cardiovascular Diseases and Stroke (NPCDCS), screening for diabetes mellitus in asymptomatic individuals without risk factors is recommended **once at age 40 years**. If the result is normal, subsequent screening is performed every 3 years thereafter. ### Recommended Screening Intervals for Diabetes (NPCDCS) | Population Group | Recommendation | |------------------|----------------| | Asymptomatic, no risk factors, age 30–40 years | Screen **once at age 40** | | Normal result at age 40, no risk factors | Repeat every **3 years** | | High-risk individuals (obesity, family history, sedentary lifestyle) | Every **1 year** | | Prediabetes (FBS 100–125 mg/dL or PPBS 140–199 mg/dL) | Every **6–12 months** | **High-Yield:** The NPCDCS does NOT recommend a 5-year interval for 30–40-year-olds without risk factors. The guideline specifies that for truly asymptomatic, low-risk individuals, the first formal screening is deferred until age 40, after which a 3-year interval applies if results are normal. This is consistent with the programme's opportunistic, risk-stratified approach to NCD screening at PHC level. **Clinical Pearl:** Opportunistic screening (i.e., checking blood glucose whenever a patient presents to a PHC for any reason) is always encouraged regardless of age. The structured interval-based screening schedule applies to formal population-level screening campaigns under NPCDCS. **Mnemonic:** **"40 first, then 3"** — First screen at 40 for low-risk individuals; if normal, every 3 years. High-risk → every 1 year. Prediabetes → every 6–12 months. *Reference: NPCDCS Operational Guidelines, Ministry of Health & Family Welfare, Government of India.*