Mini Nutritional Assessment Short-Form
Also known as: MNA-SF, Mini Nutritional Assessment SF, Short-Form Mini Nutritional Assessment, MNA Screening Form
The Mini Nutritional Assessment Short-Form (MNA-SF) is a rapid, six-item screening tool for identifying undernutrition and its risk in older adults. It was developed by Laurence Rubenstein, John Harker, Antoni Salva, Yves Guigoz, and Bruno Vellas, and reported in 2001, as a streamlined version of the longer 18-item Mini Nutritional Assessment that retained the diagnostic accuracy of the full instrument while taking only a few minutes to administer. The six items cover decline in food intake, recent weight loss, mobility, psychological stress or acute disease, neuropsychological problems, and body mass index or calf circumference, summing to a score from 0 to 14. The total classifies a patient as having normal nutritional status, being at risk of malnutrition, or being malnourished, and a low score signals the need for fuller nutritional assessment or intervention. Because it is fast, requires no laboratory tests, and uses calf circumference when height and weight are unavailable, it is well suited to busy geriatric, community, and long-term-care settings. The MNA-SF has become one of the most widely used nutritional screens in older-adult care worldwide.
Key highlights
- Very fast to administer, taking only a few minutes and requiring no laboratory tests.
- Retains the diagnostic accuracy of the full Mini Nutritional Assessment while using only six items.
- Usable when weighing is impossible by substituting calf circumference for body mass index.
- Provides a clear three-level classification that directly guides further assessment or intervention.
Intuition
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How it works
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When to use it
Use the MNA-SF when you need a fast, validated first-line screen for malnutrition risk in older adults across hospital, outpatient, community, and long-term-care settings, especially where time, equipment, or laboratory access is limited. It is ideal for routine admission screening, periodic monitoring, and large surveys because it takes only minutes, needs no blood tests, and can use calf circumference when weighing is impossible. It is best viewed as a triage step rather than a definitive diagnosis: a low score should trigger the full Mini Nutritional Assessment or a comprehensive nutritional and clinical evaluation. It is less suited to younger adults, to situations requiring a detailed dietary or biochemical assessment, or to populations where the calf-circumference substitution has not been validated. As with any screen, local prevalence and the chosen cutoff affect predictive value, so results should be interpreted alongside clinical judgement.
Strengths & limitations
- Very fast to administer, taking only a few minutes and requiring no laboratory tests.
- Retains the diagnostic accuracy of the full Mini Nutritional Assessment while using only six items.
- Usable when weighing is impossible by substituting calf circumference for body mass index.
- Provides a clear three-level classification that directly guides further assessment or intervention.
- It is a screening tool, not a diagnosis, so a flagged result still requires fuller assessment.
- Several items rely on recall or proxy report, which can be unreliable in cognitively impaired patients.
- Cutoffs and the calf-circumference substitution may need local validation in some populations.
- It does not identify the cause of malnutrition risk or capture micronutrient and biochemical status.
Common pitfalls
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Applications
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Frequently asked
How is the MNA-SF different from the full MNA?
The full Mini Nutritional Assessment has 18 items spanning anthropometric, dietary, global, and self-assessment domains and serves as a more complete nutritional assessment. The MNA-SF keeps only the six items found to carry most of the screening signal and produces a 0 to 14 score that classifies normal, at-risk, and malnourished status. The short form is designed for rapid screening; when it flags risk, clinicians can complete the full instrument for a fuller picture. The two were calibrated to agree closely, so the short form can be used on its own as a first step.
What do you do when you cannot weigh the patient?
The MNA-SF was designed for exactly this situation. When body mass index cannot be calculated because height or weight is unavailable, the BMI item is replaced by a calf-circumference measurement, scored 0 if calf circumference is below the threshold and 3 if it is at or above it. This lets the screen be completed in bed-bound or immobile patients with just a tape measure. The substitution must be done correctly, because omitting the item leaves the total incomplete and the classification invalid.
What score indicates a problem?
On the 0 to 14 scale, 12 to 14 indicates normal nutritional status, 8 to 11 indicates risk of malnutrition, and 7 or below indicates malnutrition. The conventional action threshold is a score of 11 or below, which should prompt further evaluation, completion of the full Mini Nutritional Assessment, or nutritional intervention and monitoring. Because the MNA-SF is a screen, these cutoffs are meant to identify people who need a closer look rather than to provide a final diagnosis, and they should be interpreted with clinical judgement and local context.
Sources
- 1.Rubenstein, L. Z., Harker, J. O., Salva, A., Guigoz, Y., & Vellas, B. (2001). Screening for undernutrition in geriatric practice: developing the short-form mini-nutritional assessment (MNA-SF). The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 56(6), M366-M372.
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Cite this page
ScholarGate. (2026, June 23). Mini Nutritional Assessment Short-Form. ScholarGate. https://scholargate.app/social-gerontology/mna-short-form