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Vitamin D, 25-Hydroxy, Total, Immunoassay

This test measures the level of Vitamin D in your body, which is crucial for bone health. It's especially useful for people without kidney disease to check if they have the right amount of Vitamin D.

SerumPhlebotomy

FAQ

Answers to your questions about lab testing and services.

Photo of Christina P. Kantzavelos

Christina P. Kantzavelos

I’m Christina P. Kantzavelos, MSW, LCSW, MLIS, a licensed clinical social worker and chronic illness specialist. I work with people navigating complex conditions such as Lyme disease and tick-borne disease (TBD)/ illness, POTS and dysautonomia, MCAS, EDS, Long COVID, autoimmune conditions, chronic fatigue, migraine, and persistent symptoms. My background in clinical social work, case management, and healthcare and insurance navigation has taught me to look at the whole picture rather than one symptom or diagnosis in isolation. I understand how complicated it can be to navigate multiple providers, medications, supplements, tests, and conflicting information. Through Fullscript, I help clients develop individualized supplement and wellness strategies based on their health history, current concerns, goals, and existing regimen. I take a thoughtful approach to supplement selection, with attention to potential interactions, tolerability, and the reality that people with complex illnesses often need a much more individualized approach. My work also incorporates trauma-informed, somatic, and nervous system-informed perspectives to support the connection between the brain, nervous system, immune system, and body.

My website

Focus areas

  • Immune Health

  • Mental Health

  • Family Health / General Wellness

  • Neurological Health

States of practice

  • California

  • Colorado

  • Oregon

  • Washington