Low prealbumin (transthyretin) usually signals protein‑calorie malnutrition, acute inflammation, or impaired liver synthesis. It indicates increased risk of poor wound healing, infections, muscle wasting, and longer hospital stays. Because prealbumin has a short half‑life, levels change rapidly and help monitor response to nutritional therapy. Persistent low values warrant evaluation for underlying illness, inflammation, or inadequate intake.

Both are blood proteins used to assess nutrition and liver function. Albumin, made by the liver, maintains oncotic pressure and carries drugs and hormones; its long half‑life (~20 days) reflects chronic nutritional status but is influenced by hydration, inflammation and liver disease. Prealbumin (transthyretin) has a short half‑life (~2 days), more rapidly changes with acute nutritional shifts and therapy, also affected by inflammation.

Increase prealbumin by improving overall nutrition—ensure adequate calories and high‑quality protein (eggs, dairy, lean meat, legumes) or use oral protein supplements; correct micronutrient deficiencies (zinc, vitamins); treat underlying inflammation, infection, and chronic disease; address malabsorption; consider dietitian‑guided enteral or parenteral feeding when needed; and monitor levels regularly.

Prealbumin is also known as transthyretin (TTR). Formerly called thyroxine-binding prealbumin, it transports thyroxine and retinol-binding protein–vitamin A complexes in blood. Clinically, transthyretin is used as a short-term nutritional marker and to assess protein status and liver function; levels change rapidly with acute illness, inflammation, or nutritional interventions.

No single vitamin deficiency typically causes low albumin. Hypoalbuminaemia is most often due to poor protein/calorie intake, liver disease, kidney loss, or inflammation. Severe nutrient deficits — including inadequate dietary protein and some co‑factors (for example vitamin B6 and vitamin C, which support amino‑acid and collagen-related synthesis) — can impair hepatic protein production and contribute, so clinical evaluation is needed.

Yes — drinking more water can transiently lower measured albumin by diluting blood or urine concentrations, so hydration affects lab results. However, it does not reduce the body’s total albumin or treat true low albumin from causes like liver disease, malnutrition, inflammation, or kidney loss. Persistent abnormal albumin levels merit medical evaluation to identify and treat the underlying cause.