Cervical mucus and serum samples were obtained from 42 anovular women and 20 normal ovular fertile women (controls) for the determination of prolactin concentration by a solid phase radioimmunoassay. The former group was subgrouped into 14 galactorrhoeic (9 with oligohypomenorrhea and 5 with amenorrhea) and 28 non-galactorrhoeic (19 with oligohypomenorrhea and 9 with amenorrhea). The level of prolactin in cervical mucus of normally menstruating women was significantly higher than that of serum at P less than 0.0125 (11.68 +/- 0.77 ng/ml and 16.09 +/- 1.65 ng/ml, mean +/- SE, respectively). Serum prolactin level in galactorrhoeic amenorrhea cases was 8.2 times that of controls, while cervical mucus prolactin amounted to 32 times its control value. The rise of cervical mucus prolactin in cases of galactorrhea oligohypomenorrhea was 21 times its control value which is markedly higher than that of serum (1.9 times). The average rise of serum prolactin in the whole group of galactorrhea with abnormal menstrual function was about 4 times the control value, while the average rise of cervical mucus prolactin was about 41 times the corresponding control value. In the cases of galactorrhea with menstrual dysfunction, serum prolactin level may be normal in 50% of cases, while cervical mucus prolactin is strikingly elevated in 100% of cases. The possibility of pituitary adenoma should be considered if the level of serum or cervical mucus prolactin exceeds 100 ng/ml and 600 ng/ml respectively. The possible physiological role of cervical mucus prolactin and its source are discussed.

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http://dx.doi.org/10.1111/j.1447-0756.1989.tb00165.xDOI Listing

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