Facebook Pixel Code
Section banner image
Paediatric Laboratory Medicine

Vitamin A, Blood

Clinical Significance

Vitamin A is critical for vision, growth, and many cell functions. High concentrations of vitamin A are seen with renal failure, but this is not associated with toxicity, and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of vitamin A are consistent with fat malabsorption and rarely due to inadequate diet. Vitamin A, vitamin E, and carotene are always extracted and detected simultaneously. This is a free vitamin A (retinol).

Test Name

Vitamin A, Blood

Alternate Name/ Synonym

Retinol

Test Code

VIA

Division

Biochemistry - Biochemistry

Method

HPLC

Specimen Type

Serum or Sodium/Lithium Heparin plasma

Minimum Specimen Requirements

200 uL

Storage/Transportation

Frozen

Approval is not required

CPT Codes

84590

Shipping and Contact Information

The Hospital for Sick Children
Rapid Response Laboratory
170 Elizabeth Street, Room 3642
Toronto, ON
M5G 2G3
Canada
Phone: 416-813-7200
Phone: 1-855-381-3212

Reference Range

 

Age

Range (µmol/L)

< 1y

0.3 – 1.9

1 – < 11 y

1.0 – 1.6

11 – < 16 y

0.9 – 1.9

16 – < 19 y

1.0 – 2.6