Macroprolactin/Prolactin details
What Macroprolactin/Prolactin shows
This measures the percentage of your prolactin that exists in a large, less biologically active form called macroprolactin, as opposed to the smaller, fully active monomeric form. Because macroprolactin is measured along with active prolactin in a standard prolactin test but doesn't have the same biological effects, a high percentage of macroprolactin can make a total prolactin result look falsely elevated. This test helps clarify whether an elevated prolactin level is clinically meaningful (driven mainly by active prolactin) or largely explained by macroprolactin, which generally doesn't require the same treatment or workup.
Tests that include Macroprolactin/Prolactin
This test is used to determine biologically active levels of prolactin in asymptomatic patients with elevated prolactin levels.
- Monomeric Prolactin The active, single-molecule form of prolactin, distinguished from macroprolactin (a larger, less active form) to clarify the true cause of an elevated prolactin result.
- Prolactin A pituitary hormone best known for stimulating milk production; also checked to evaluate menstrual irregularities, fertility issues, or pituitary conditions in men and women.
- Macroprolactin/Prolactin The percentage of your prolactin that's in a large, less biologically active form. Helps determine whether an elevated prolactin result is clinically significant.
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