Test Guide | Te Whatu Ora - Health New Zealand Waikato Laboratory Website

Laboratory Information

Test Name

Vitamin A

Synonyms

Retinoic acid
Retinol

External Price (excl. GST)

Price Comment

Combined pricing for Vitamin A & Vitamin E

Specimen Collection

Pre Testing Requirements

Nil

Adult Specimen

1 x Serum (Gold/ Red Cap), Lithium Heparin - (Green Cap)

Paediatric Specimen

Full micro tube Serum (Gold / Red Cap), Lithium Heparin (Green Cap)

Sample Delivery to Lab

Ambient

Instructions for Referral to Waikato Lab

Aliquot instructions

Separate serum/plasma and store it in the refrigerator.

Aliquot Transport

If sending from an outside laboratory serum / plasma must be sent separated and refrigerated.

Test Information

Department

Biochemistry

Test Availability

Mon - Fri, 0800 - 1630 excl. Public Holidays

Laboratory Turnaround Time

5 working days

Method

LC-MS/MS

Unit of measurement

umol/L

Reference interval

	Vitamin A (umol/L)	Vitamin E ( umol/L)
Preterm neonate	0.5-1.6	1-8
Term neonate	0.6-1.8	2-8
1-6 years	0.7-1.5	7-21
7-12 years	0.9-1.7	10-21
13-19 years	0.9-2.5	13-24
20+ years	1.1-2.8	12-46

Uncertainty of measurement

20%

Additional Information

Vitamin A & E tests are performed together on the same sample

Referred Out

Minimum Volume

100 microlitres

Referred Test

Electronic Information

Registration Code

VITAEP

HL7 mapping code

VIT_A

LOINC Code

14905-4

Laboratory Test Reference Guide