017509

Vitamin A Serum (8 hour fast required)



Product Description

Synonyms:

  • A, Vitamin
  • Retinol, Serum

The Vitamin A Serum blood test is used in the differential diagnosis of hypervitaminosis A. A combination of a low serum carotene level and a low vitamin A suggests inadequate vitamin A nutrition.

Special Instructions:

Patients must fast a minimum of eight hours. No foods containing vitamin A should be ingested in the previous 48 hours by patients older than six months. For those who are younger than six months, the period is 24 hours.