Vitamin A, blood

Alphabetical Test listing

Vitamin A, blood-13354

Test name:

Vitamin A, blood

Test number:

13354

Excellian order number:

LAB13354

Abbreviation:

VTA

Alternate names:

A, vitamin
Retinol

Useful for:

Differential diagnosis of hypervitaminosis A. A combination of a low serum carotene level and a low vitamin A suggests inadequate vitamin A nutrition.

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

0.8 mL

Minimum volume:

0.4 mL

Collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection

Transport container:

Gold serum separator (SST) tube

Alternate collection container:

Red serum vial/tube - 5 mL

Alternate processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Alternate transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Transport and stability:

Ambient (preferred) - 7 days

Refrigerated - 14 days

Frozen - 14 days

Freeze/thaw cycles - stable x6

Reason for rejection:

Sample type other than serum received

Performing lab:

LabCorp Burlington (017509): R-LC

Days set up:

Daily

TAT:

5 days

Method:

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Reference ranges:

Age	Range in μg/dL
0 - 30 days	Not established
1 mo - 5 yrs	14.4 − 42.6
6 - 11 yrs	18.2 − 45.7
12 - 19 yrs	18.8 − 54.9
20 - 39 yrs	18.9 – 57.3
40 - 59 yrs	20.1− 62.0
>59 yrs	22.0 − 69.5

CPT codes:

84590

LOINC code:

Result 2923-1

Date created:

04/11/2019

Revised date:

03/30/2022

Review date:

03/24/2025