Let’s explore “Total iron-binding capacity — lab reference”

No single normal cutoff fits every patient. Use age, baseline, trend, prostate size, risk factors, and shared decision-making.

Often used when total PSA is in an indeterminate zone. Use the performing-lab risk table.

Consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.

Binding abnormalities and severe illness may affect some free-hormone assays.

Calculated from iron and TIBC. Fasting and timing improve consistency.

Acute-phase reactant. Menstruation, menopause, inflammation, liver disease, and iron therapy matter.

Can help distinguish iron deficiency from inflammation; use performing-lab interval.

Depends on total testosterone, SHBG, albumin, calculation, and assay.

Adult interval. Pregnancy and pituitary disease require different interpretation.

Useful in selected hyperthyroid states; not a sensitive stand-alone test for hypothyroidism.

No broadly accepted treatment target. Dr. Purser to define whether and how this is used.

Assay-specific. Positive result supports thyroid autoimmunity but does not determine treatment alone.