Let’s explore “Transferrin — lab reference”

The test method matters. Also affects thyroglobulin tumor-marker interpretation.

Ask your clinician to use the exact assay cutoff. Helpful in selected Graves disease questions.

This is not a general thyroid wellness target. It may be used for follow-up after certain thyroid conditions, alongside thyroid anatomy and antibody results.

Morning fasting collection is preferred when practical. Day-to-day variation is substantial.

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

<150 supports deficiency; 150-400 is often treated as borderline and may warrant MMA/homocysteine review.

<4.0 suggests deficiency. Recent intake or supplementation may raise serum values.

More specific for cellular B12 deficiency; kidney impairment can elevate.

No universal wellness target. Ask your clinician to read this result with B12, folate, B6, kidney, thyroid, genetics, and medications.

Acute-phase reactant; used in hemolysis evaluation with LDH, bilirubin, and reticulocytes.

Interpret relative to hemoglobin, oxygenation, and kidney function.

<10 severe deficiency; 10-19 mild-moderate deficiency. Toxicity assessment requires clinical context.