LNMP stands for which term?

• A. Last Normal Menstrual Period
• B. Last Normal Menses Period
• C. Last Noted Menstrual Period
• D. Last Normal Menstrual Periods

Answer: (A)

LNMP refers to the most recent normal menstrual cycle used for dating a pregnancy. The standard expansion is Last Normal Menstrual Period—the singular form fits the idea of one recent cycle that serves as the reference point for estimating gestational age and due date (often via Naegele’s rule). The term implies a regular, typical cycle length; when cycles are irregular or uncertain, dating may rely more on ultrasound. The other phrasings are not standard: they either use awkward or redundant wording, imply multiple cycles, or replace “noted” with a term not used in this context.