Reviewed by the Help Dementia Editorial Team — our editors review every article for accuracy against guidance from the National Institute on Aging, the Alzheimer’s Association, and peer-reviewed sources.
If you or a loved one has received a low Montreal Cognitive Assessment (MoCA) score, the first thing to understand is that a single test score does not equal a diagnosis. A low MoCA is a red flag that warrants further investigation—not a final verdict. When a score falls below 26 out of 30 points, it signals that cognitive changes may be present, but the next step is always a comprehensive clinical evaluation by a qualified healthcare provider, not immediate panic or self-diagnosis.
For example, if someone scores 24 on the MoCA, this falls into the range suggestive of mild cognitive impairment, but only a neurologist or memory specialist can determine whether the person actually has MCI, whether reversible factors are at play, or whether the low score reflects testing anxiety, depression, or other treatable conditions. The MoCA is a powerful screening tool—sensitive enough to catch cognitive changes early—but it is not diagnostic on its own. Your response to a low score should be structured and methodical: seek a full medical workup, pursue additional cognitive testing, rule out reversible causes, and then develop a plan with your healthcare team. This article walks through exactly what those next steps look like, what the different score ranges mean, and how to advocate for proper evaluation.
Table of Contents
- Understanding Your MoCA Score and What It Actually Means
- Why the MoCA Alone Cannot Diagnose Cognitive Impairment
- Pursuing a Full Medical Workup and Further Testing
- Deciding Between Repeating the MoCA and Alternative Cognitive Tests
- Special Considerations in MoCA Interpretation and Testing Context
- Starting Evidence-Based Lifestyle Modifications While You Pursue Diagnosis
- Working With Your Healthcare Team on a Long-Term Plan
- Conclusion
Understanding Your MoCA Score and What It Actually Means
The moca yields a single number out of 30, but that number exists within a context. Scores of 26 to 30 are generally considered normal cognition, meaning no significant cognitive impairment is apparent. Scores between 18 and 25 suggest mild cognitive impairment—cognitive changes noticeable enough to affect daily function but not yet severe dementia. Scores from 10 to 17 may indicate moderate cognitive impairment, and scores below 10 point toward severe cognitive impairment. But here’s the critical caveat: these ranges are guidelines, not diagnostic thresholds. A score of 24 is not automatically a diagnosis of MCI; it is a signal that warrants further testing. One important adjustment applies to education level.
If a person has 12 years or fewer of formal education, add 1 point to their raw score to account for educational disadvantage. So a raw score of 23 becomes 24 after the education adjustment. Additionally, emerging research shows that optimal cutoff scores differ by race and ethnicity. Studies have found that a cutoff of 25 may be appropriate for white participants, while a cutoff of 22 may be more suitable for Black participants. The standard cutoff of 26 may not apply equally across all populations, a limitation worth knowing because it means the interpretation of your score may depend on these demographic factors. Clinical studies have documented average scores in different groups: people with no cognitive impairment average 27.4, those with mild cognitive impairment average 22.1, and those with Alzheimer’s disease average 16.2. These averages show that the test does separate groups, but individual variation is large. Two people with a score of 23 might have very different underlying conditions.
Why the MoCA Alone Cannot Diagnose Cognitive Impairment
The MoCA is designed as a screening tool, not a diagnostic test. Screening tools are meant to identify people who need further evaluation; they are not meant to confirm a disease. This distinction matters enormously. A positive screening test (a low score) tells you that further investigation is needed. It does not tell you what is wrong or even that something is wrong.
A patient might score low on the MoCA because of depression, sleep deprivation, uncontrolled diabetes, a vitamin B12 deficiency, medication side effects, hearing loss making it hard to understand test instructions, or genuine cognitive decline. Only a thorough evaluation can sort out which. This is why the clinical guideline is clear: “A single low MoCA score without supporting clinical history rarely justifies immediate diagnosis; prompt action and further evaluation are essential rather than assuming a diagnosis based on one test.” In other words, do not assume you have dementia because of one low score. Instead, treat the low score as an urgent reason to schedule an appointment with your primary care doctor or a neurologist. Many causes of low cognitive test scores are reversible if caught early. Thyroid disease, depression, anemia, and medication interactions can all look like cognitive impairment on a test but improve dramatically once treated.
Pursuing a Full Medical Workup and Further Testing
Your next appointment should be with your primary care physician or a neurologist. Come prepared with your MoCA score and the context around it: when you took the test, who administered it, whether you were feeling well that day, and any cognitive concerns you or your family has noticed. The physician will take a medical history, review your medications, and likely order blood work to rule out reversible causes. Standard tests often include thyroid function (TSH), vitamin B12 and folate levels, complete blood count, metabolic panel, and sometimes additional tests depending on your history.
The doctor may also order brain imaging—an MRI or CT scan—to look for structural problems like stroke, bleeding, or normal pressure hydrocephalus. These conditions can mimic cognitive impairment and are sometimes reversible. After this medical workup, if cognitive concerns remain, your doctor may refer you to a neurologist or memory specialist for a more detailed cognitive assessment. A neuropsychological evaluation, administered by a trained psychologist, is more comprehensive than the MoCA. It assesses memory, language, attention, processing speed, and executive function in much greater depth and can pinpoint which cognitive domains are affected and which remain intact.
Deciding Between Repeating the MoCA and Alternative Cognitive Tests
Some patients and providers choose to repeat the MoCA to see if the low score was a one-time aberration. Testing anxiety, a bad night’s sleep, or distraction during the first test could theoretically lower the score. If you retake the MoCA several weeks later and score higher, that suggests the first low score may not reflect your baseline cognition. However, repeating the same test can be affected by practice effect—you remember the questions from the first time—which can artificially raise the score on a retest. Because of these limitations, many specialists prefer alternative cognitive screening tools or a full neuropsychological battery.
The Montreal Cognitive Assessment itself comes in two versions (MoCA 7.3 and earlier versions), so you could take a different version. Other brief cognitive screens include the Mini-Cog, the Montreal Cognitive Assessment-Blind, designed for people with vision loss, or the Cognitive Assessment for Dementia, Indian Population (CADIP). Each has strengths and weaknesses. Rather than getting caught up in which test is “best,” the key is moving forward with some form of additional assessment. Waiting months to retake the same test delays the diagnostic process; pursuing a different evaluation modality or a comprehensive neuropsychological assessment is often more productive.
Special Considerations in MoCA Interpretation and Testing Context
The MoCA was developed in Montreal, in French and English, and has been translated into many languages. However, translation quality varies, and cultural and linguistic factors can affect performance. If you took the MoCA in a language that is not your primary language, or if you had significant hearing or vision problems during the test, those factors could have depressed your score. Mention these details to your doctor.
Equally important is the testing context. Was the test administered by a trained professional in a quiet, controlled environment? Was the time limit strictly enforced, or were you allowed extra time due to processing difficulties? These procedural details affect the meaning of your score. Furthermore, certain neurological and psychiatric conditions can lower MoCA scores in ways that do not reflect dementia. For instance, people with Parkinson’s disease, multiple sclerosis, major depression, bipolar disorder, or ADHD may score low on the MoCA despite intact long-term memory and not having dementia. Your doctor needs to know your full medical and psychiatric history to interpret your score correctly.
Starting Evidence-Based Lifestyle Modifications While You Pursue Diagnosis
While you are awaiting further evaluation, there is no reason to wait to implement evidence-based strategies that support cognitive health. These strategies benefit everyone, whether they have cognitive impairment or not, and they do not depend on a formal diagnosis. Aerobic exercise, for example, has robust evidence for slowing cognitive decline. Aim for at least 150 minutes of moderate-intensity activity per week—brisk walking, swimming, or cycling—as these activities increase blood flow to the brain. Diet matters too.
The Mediterranean diet, with emphasis on vegetables, fruit, fish, whole grains, and olive oil, is associated with slower cognitive decline. Cognitive engagement—learning new skills, reading, puzzles, games—keeps the brain active. Social connection is equally important; social isolation is a risk factor for cognitive decline, while regular social activity supports brain health. Sleep quality, blood pressure control, and management of diabetes and high cholesterol all influence long-term cognitive outcomes. None of these interventions requires a diagnosis to start; many are things you can begin immediately and maintain for the rest of your life.
Working With Your Healthcare Team on a Long-Term Plan
Once you have completed your initial evaluation and your doctor has clarified the situation, work together to develop a plan. If reversible causes were found, focus on treating them. If mild cognitive impairment or early dementia is confirmed, your provider may discuss medications like donepezil or other cholinesterase inhibitors, though these have modest effects and are not appropriate for everyone. Your provider will also help you plan for the future: should you pursue genetic testing, update your legal documents, inform family members, or schedule driving evaluations? Revisiting cognitive testing at regular intervals—perhaps annually or every two years—helps track whether cognition is stable, improving, or declining.
This longitudinal perspective is far more informative than any single score. Many people with mild cognitive impairment remain stable for years; others progress to dementia. Regular testing helps your team identify changes early and adjust your care plan. Consider also whether you are interested in participating in research trials related to cognitive aging or your specific diagnosis. Clinical trials may offer access to new treatments and contribute to the broader understanding of dementia prevention and treatment.
Conclusion
A low MoCA score is not a diagnosis—it is a gateway to proper evaluation. Your response should be prompt but not panic-driven. Schedule an appointment with your doctor, bring your score and any other health information, and expect a comprehensive workup including blood tests, possibly imaging, and likely a referral for further cognitive assessment. Remember that many conditions masquerade as cognitive impairment and are treatable once identified.
While you move through the diagnostic process, start supporting your brain health through exercise, diet, sleep, cognitive engagement, and social connection—strategies that benefit anyone at any stage of cognitive health. The goal of further evaluation is clarity: to understand whether you actually have cognitive impairment, what is causing it, and what can be done about it. This clarity is necessary to make informed decisions about your health, your family, your work, and your future. A low MoCA is a signal to act, not a verdict. Take it seriously, but take it methodically.
