Which index includes serum albumin as one of its objective criteria?

• A. All of PNI, PINI, and NRI
• B. PNI only
• C. PINI only
• D. NRI only

Answer: (A)

Albumin is a biochemical marker that helps reflect both protein stores and inflammatory status, so it shows up in several practical nutrition risk indices.

In the Prognostic Nutritional Index, albumin is paired with lymphocyte count to capture both visceral protein status and immune competence. A higher albumin suggests better protein stores, while the lymphocyte component adds information about immune function, giving a more complete objective measure of nutritional-inflammation status.

The Nutritional Risk Index combines a weight measure with albumin to assess risk. Weight loss points to energy and protein depletion, and albumin adds a biochemical signal of visceral protein status, enhancing the ability to identify those at risk even when weight change alone doesn’t tell the full story.

The Prognostic Inflammation and Nutritional Index emphasizes the inflammatory context by including C-reactive protein and albumin. This reflects the idea that inflammation drives changes in albumin and that the combination of a high inflammatory marker with low albumin signals a poorer prognosis and greater need for intervention.

Because albumin correlates with outcome and, despite its limitations as a sole nutritional marker, integrates well with other parameters, it is included as an objective criterion in all three indices.