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Vitamin A (LC-MS/MS), Serum/Plasma

Test ID: VITA

Test

Specimen

Performance / Interpretation

Interface / Setup

Aliases/Synonyms

Retinol

Method

LC-MS/MS

Report Includes

Vitamin A

Specimens

Gel-separator tubes are not acceptable; Serum; Plasma (EDTA); Plasma (Li Heparin)

Test Location

London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5

Test Version

19-Jan-2023

Specimens

Gel-separator tubes are not acceptable; Serum; Plasma (EDTA); Plasma (Li Heparin)

Collection Containers

Red top (no additive); Lavender top (EDTA); Green top (Li heparin)

Sample Volume

2 mL

Minimum Volume

1 mL

Specimen Comment

Avoid gel separator tubes

Patient Preparation

Fasting (12 – 14 h) recommended but non-fasting is acceptable. Avoid vitamin supplementation for 24 hours prior to collection.

Collection & Handling

Collection Instructions

Avoid hemolysis.

Handling Information

Store and submit specimen protected from light in an amber vial.
Store and send frozen.

Stability

Refrigerated	28 days
Frozen	28 days

Rejection Criteria

Specimen	Gel-separator tube or not protected from light

Test Version

19-Jan-2023

Method

LC-MS/MS

Turnaround Time

12 days

Results

Name	Units	Reference Range	Conversion Factor
Vitamin A	µmol/L	0 - <1 year: 0.4 - 2.3 1 - <12 years: 0.8 - 1.9 12 - <:20 years: 1.0 - 2.6 20 - <40 years: 1.1 - 3.1 40 - <60 years: 1.2 - 3.5 ≥60 years: 1.3 - 3.8	µg/dL x 0.035
Vitamin A

Test Location

London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5

Test Version

19-Jan-2023

HL7 Interface Codes

Order Code	Result Codes	Units
VITA	8872Vitamin A	umol/L

Test Version

19-Jan-2023