Blood tests can help clarify cognitive symptoms

Laboratory testing can help clinicians identify medical contributors to problems such as forgetfulness, fatigue, confusion and poor concentration. The Gulfport-based ADD Clinics says blood work is one part of a broader evaluation that may uncover treatable issues or rule out other causes.

Why it matters: - Blood testing can help identify medical conditions that may mimic or contribute to cognitive symptoms such as poor concentration, forgetfulness, mental fatigue and confusion. - The approach can surface potentially treatable causes, including nutritional deficiencies, thyroid problems, anemia, blood sugar abnormalities, and organ dysfunction. - Results can help clinicians avoid assuming every attention or memory complaint comes from one diagnosis.

What happened: - ADD Clinics in Gulfport, Mississippi, outlined how blood testing fits into evaluations for cognitive symptoms. - Dr. Stanford Owen, owner of ADD Clinics, said laboratory testing can help clinicians look for physical contributors to attention and memory problems. - Owen said blood tests can help identify or rule out medical conditions that may resemble attention or cognitive disorders. - The clinic said blood testing is not a standalone diagnosis for ADHD or most forms of cognitive impairment.

The details: - Thyroid testing can provide useful information because thyroid hormones affect metabolism and brain-related processes. - Hypothyroidism can be associated with fatigue, slowed thinking, difficulty concentrating and memory complaints. - An overactive thyroid can affect sleep, mood, attention and energy levels. - Common thyroid labs include TSH and, when appropriate, additional thyroid hormone measurements. - Vitamin B12 deficiency can affect red blood cell production and normal neurological function. - Low B12 can contribute to fatigue, weakness, numbness or tingling, balance problems, memory difficulties and changes in thinking. - Folate may also be evaluated because of its role in blood cell production and nervous system function. - A complete blood count, or CBC, measures red blood cells, hemoglobin, hematocrit, white blood cells and platelets. - Anemia can reduce oxygen delivery and contribute to fatigue, weakness, reduced exercise tolerance, dizziness or difficulty concentrating. - A CBC can also point to nutritional deficiencies, blood loss, inflammation, infection or other medical conditions. - Blood sugar testing may include fasting glucose or hemoglobin A1C. - Abnormally high or low blood sugar can affect concentration, alertness, energy and cognitive function. - Blood chemistry testing can measure electrolytes such as sodium, potassium, calcium and bicarbonate. - Significant electrolyte abnormalities can contribute to confusion, weakness or changes in mental status. - Kidney and liver function may also be examined. - A comprehensive metabolic panel can capture several of these measures in one group of tests. - Iron studies may include ferritin and other iron-related measurements when symptoms and history suggest a need. - Low iron stores can exist before severe anemia develops. - Fatigue from iron deficiency can be mistaken for a motivation or concentration problem. - Testing should be tailored to age, medical history, medications, diet, sleep, family history, symptom duration, neurological signs and other factors. - Blood tests can also reveal findings unrelated to the cognitive complaint, so clinical interpretation matters. - A value slightly outside a reference range does not automatically explain a symptom.

Between the lines: - The article argues for a broader medical lens on attention and memory complaints, not just a psychiatric or behavioral one. - Owen said cognitive symptoms should be viewed alongside fatigue, weight changes, sleep problems and other physical symptoms. - The clinic emphasized that laboratory data only becomes useful when interpreted with the full clinical picture. - The underlying message is that cognitive complaints often have multiple possible sources, and blood work is one tool to sort them out.

What's next: - Clinicians may use blood testing as part of a wider workup that also includes medical history, medications, sleep, mental health, neurological findings and symptom patterns. - Depending on results, additional evaluation may be needed to confirm or rule out medical contributors. - Patients with cognitive changes may receive more targeted testing if routine labs suggest a specific issue. - ADD Clinics says the goal is to determine whether a medical factor may help explain the symptoms being evaluated.

The bottom line: - Blood tests do not replace a full cognitive evaluation, but they can uncover treatable medical problems that affect attention, memory and mental clarity. - ADD Clinics is based in Gulfport, Mississippi, and evaluates attention, concentration and related cognitive and behavioral concerns. - More information is available through the clinic's Facebook page.