What is the normal value of prolactin stimulation test?

summary

Prolactin (PRL) secretion inhibition test is a test method to measure the basic value of PRL under fasting and quiet state, then lie in bed during oral levodopa test, and draw blood again to check PRL 3 hours after taking medicine. So, what is the normal value of prolactin stimulation test and what is its role?

What is the normal value of prolactin stimulation test?

What is the normal value of prolactin stimulation test? The peak value of prolactin stimulation test appears 90 minutes after administration in normal people, which is more than 3 times higher than the basic value or the peak / base ratio value is more than 2.5. The response of patients with functional hyperprolactinemia is similar to that of normal people. The effect of prolactin stimulation test; There was no response or delayed response in PRL tumor patients, and the base peak / base ratio was less than 1.5.

Abnormal results: PRL tumor was common in female patients, mostly in 20-40 years old. Prolapse amenorrhea syndrome is a common manifestation of female PRL tumors. The larger the tumor, the higher the PRL level and the more obvious the symptoms. PRL tumors in men are usually larger and tend to develop suprasellar, but they are relatively rare. The main symptoms of sexual dysfunction, accounting for 83%, can be complete or partial. Such as varying degrees of sexual desire decline, impotence, male infertility and sperm count decreased.

Most of female PRL tumors are microadenomas, which are found in 20-30 years old. The typical symptom is amenorrhea galactorrhea infertility triad. Secondary amenorrhea is more common, accounting for about 90%. Galactorrhea is the main manifestation of the disease, mostly touch lactation, accounting for 50% - 90%. About 60% of them complained of sexual dysfunction, such as decreased or absent libido, loss of sexuality, absence of orgasm, copulation pain, etc. Other symptoms of hypogonadism include shortened menstrual period, rare or excessive menstrual volume, delayed menstruation and infertility. In addition, the decrease of serum can cause the symptoms of mammary gland atrophy, pubic hair shedding, vulva atrophy and vaginal secretion reduction.

matters needing attention

Need to check the crowd: suspected amenorrhea, galactorrhea, breast atrophy, pubic hair loss, decreased libido, impotence and other prolactinoma related symptoms. The results of prolactin stimulation test are high. Some diseases may include hyperprolactinemia, amenorrhea and galactorrhea syndrome, prolactinoma and gynecomastia. Check before taboo: pay attention to normal diet, pay attention to normal work and rest, prevent endocrine disorders. Drugs that affect prolactin secretion are prohibited. Inspection requirements: actively cooperate with the doctor's requirements. Pay attention to the fasting basic state in the morning, and first draw blood to measure the basic value of PRL. Pay attention to the test in strict accordance with the prescribed time interval for blood test.