Lab ranges
12 entries
Erythropoietin — lab reference
Interpret relative to hemoglobin, oxygenation, and kidney function.
Ferritin — lab reference
Acute-phase reactant. Menstruation, menopause, inflammation, liver disease, and iron therapy matter.
Folate, serum — lab reference
<4.0 suggests deficiency. Recent intake or supplementation may raise serum values.
Haptoglobin — lab reference
Acute-phase reactant; used in hemolysis evaluation with LDH, bilirubin, and reticulocytes.
Homocysteine, total — lab reference
No universal wellness target. Ask your clinician to read this result with B12, folate, B6, kidney, thyroid, genetics, and medications.
Methylmalonic acid — lab reference
More specific for cellular B12 deficiency; kidney impairment can elevate.
Serum iron — lab reference
Morning fasting collection is preferred when practical. Day-to-day variation is substantial.
Soluble transferrin receptor — lab reference
Can help distinguish iron deficiency from inflammation; use performing-lab interval.
Total iron-binding capacity (TIBC) — lab reference
Ask your clinician to read this result with iron, transferrin saturation, and ferritin.
Transferrin — lab reference
Negative acute-phase reactant; affected by liver function and nutrition.
Transferrin saturation — lab reference
Calculated from iron and TIBC. Fasting and timing improve consistency.
Vitamin B12 — lab reference
<150 supports deficiency; 150-400 is often treated as borderline and may warrant MMA/homocysteine review.
About these ranges
These are Dr. Purser’s adult reference ranges. Units, symptoms and health history matter when you discuss a result with your clinician.
