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

Adult Specimen

1 x Serum (Gold/ Red Cap)

Pre Testing Requirements

Nil

Paediatric Specimen

Full micro tube Serum (Gold / Red Cap)

Instructions for Referral to Waikato Lab

Aliquot instructions

Separate serum and store it in the refrigerator.

Aliquot Transport

If sending from an outside laboratory serum 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