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May 7, 2026, 05:35

Aarti Merai: Decoding Iron Panels in Clinical Practice

Aarti Merai, Medical Laboratory Technologist, shared a post on LinkedIn:

“Serum Iron versus Serum Ferritin: What’s the Difference – and Why It Matters?

In clinical practice, these two markers are often used interchangeably – but they tell very different stories about iron status.

Serum Iron

This measures the amount of circulating iron bound to transferrin in the blood at a given moment.

It’s dynamic and influenced by:

In short: Serum iron reflects what’s ‘in transit’, not what’s stored.

Serum Ferritin

Ferritin is the body’s primary iron storage protein.

Serum ferritin levels correlate with total iron reserves.

This makes ferritin the most reliable early marker of iron deficiency.

However, there’s a caveat:

Ferritin is also an acute-phase reactant.

It can be elevated in:

Clinical Insight

Bottom Line

If you’re evaluating iron status, don’t rely on a single parameter.

Interpretation should always be contextual – integrating ferritin, transferrin saturation, CRP, and the clinical picture.

Because in medicine, numbers don’t exist in isolation – patients do.”

Aarti Merai: Decoding Iron Panels in Clinical Practice

Aarti Merai Health Hematology Hemostasis News Hemostasis Today Medicine Serum Ferritin Serum Iron Transferrin

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