This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
A lab technician notes that prolactin levels in a patients, blood sample is high. This could be due to all except 
Select and explain. 
A. Sleep, B. Pregnancy, C. Stress, D. L-dopa
D: L-dopa
Answer: D: L-dopa 
Explanation: L-Dopa decreases prolactin secretion by increasing the formation of dopamine (prolactin inhibitory hormone) Increased Prolactin Secretion Decreased Prolactin Secretion Sleep Dopamine Stress L-Dopa Strenous excercise Apomorphine Sexual intercourse in women Bromocriptine and related ergot derivatives Preganancy Nursing Breast stimulation in non-lactating women Estrogen Hypothyroidism TRH Phenothiazines, Butyrophenes Opioids&; Ref: Guyton and Hall 13th edition Pgno: 942