A1 <30; A2 30-300; A3 >300. Persistence ≥3 months matters for CKD classification.
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What’s searchable?Ask your clinician to use laboratory and indication-specific thresholds; consider timed collection when needed.
Collection completeness must be assessed.
Mayo example age 20-24: M 5.25-20.7; F <0.13-1.08. Declines with age and is method-dependent.
Estrogen, thyroid, liver disease, insulin resistance, age, and medications affect SHBG.
Female cycle-phase detail is on the next section. LC-MS/MS is preferred at low concentrations.
Female phase detail is on the next section. Exogenous progesterone route/timing matters.
Ask your clinician to read this result with testosterone or estradiol, FSH, cycle phase, and pituitary context.
Ask your clinician to read this result with age, ovarian status, testosterone/estradiol, and pituitary context.
Stress, sleep, nipple stimulation, medications, pregnancy, and macroprolactin matter.
M 18-30: 105-728; F 18-30: 83-377. Values decline substantially with age.
Assay-specific and age-dependent.
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