Biomarker Lens

Common biomarkers

  • Hemoglobin
  • Glucose
  • ALT
  • Apolipoprotein B
  • C-Reactive Protein, Cardiac
  • Ferritin
  • Alb/Creat Ratio, Urine
  • Alkaline Phosphatase
  • FSH
  • T4,Free(Direct)

Biomarkers · Chemical

Vitamin A

Primary unit
ug/dL
LOINC codes
2923-1
Tests that measure Vitamin A
Labcorp 7, Quest Diagnostics 3

Ranges

Each lab publishes a reference range for the population groups it tests, usually the middle 95% of results. These intervals describe that population, not an optimal or healthy target. How ranges differ

Quest Diagnostics, Micronutrient, Vitamin A (Retinol) 10179

PopulationInterval
18-19 years26-72 mcg/dL
>19 years38-98 mcg/dL

Quest Diagnostics test catalog, 10179

Quest Diagnostics, Vitamin A (Retinol) 921

PopulationInterval
1-6 Years20-43 mcg/dL
7-12 Years26-49 mcg/dL
13-19 Years26-72 mcg/dL
Adult38-98 mcg/dL

Quest Diagnostics test catalog, 921

Tests

Check the catalog code, specimen, method and preparation for every test that measures Vitamin A. Select up to five tests to compare them side by side.

Labcorp 7 tests

Single-analyte tests

  • Vitamin A 017509

    Serum · Fasting not stated · Turnaround 4 - 5 days

    Method and collection
    Method
    Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
    Preparation
    Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
    Collection
    If a red top is used, transfer separated serum to a plastic transport tube.
    Reference notes
    See table. Age Range (μg/dL) 0 to 30 d Not established 1 m to 5 y 14.4 − 42.6 6 to 11 y 18.2 − 45.7 12 to 19 y 18.8 − 54.9 20 to 39 y 18.9 – 57.3 40 to 59 y 20.1− 62.0 >59 y 22.0 − 69.5
    Labcorp catalog page

Panels that include this biomarker

  • Vitamin A and Carotene 001750

    2 analytes · Serum · Fasting not stated · Turnaround 4 - 6 days

    Method and collection
    Method
    Vitamin A: Liquid chromatography/tandem mass spectrometry (LC/MS-MS); Carotene: High-pressure liquid chromatography (HPLC) with UV detection
    Preparation
    Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
    Collection
    Transfer specimens to separate amber plastic transport tubes. Beta carotene should be shipped in amber plastic transport tube with amber top.
    Labcorp catalog page

  • Vitamin A and E 144039

    3 analytes · Serum · Fasting not stated · Turnaround 4 - 6 days

    Method and collection
    Method
    Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
    Preparation
    Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
    Collection
    If red-top tube is used, transfer separated serum to a plastic transport tube.
    Labcorp catalog page

  • Vitamin A, E, and β-Carotene Profile 144057

    4 analytes · Serum · Fasting not stated · Turnaround 4 - 7 days

    Method and collection
    Method
    Beta Carotene: High-pressure liquid chromatography (HPLC); Vitamin A and E: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
    Preparation
    Patient should abstain from alcohol for 24 hours prior to collection. For those who are younger than six months, draw prior to next feeding. Blood should be collected before breakfast in the morning and prior to any medication.
    Collection
    If red-top tube is used, transfer separated serum to a plastic transport tube. Beta carotene should be shipped in amber plastic transport tube with amber top.
    Labcorp catalog page

  • Post-Bariatric Surgery Micronutrient Profile 259129

    33 analytes · Serum · Fasting not stated · Turnaround 3 - 5 days

    Method and collection
    Method
    See individual test components.
    Labcorp catalog page

  • Post-Bariatric Surgery Comprehensive Profile 259090

    50 analytes · Serum · Fasting not stated · Turnaround 5 - 7 days

    Method and collection
    Method
    See individual test components.
    Labcorp catalog page

Quest Diagnostics 3 tests

Single-analyte tests

  • Micronutrient, Vitamin A (Retinol) 10179

    Serum · Fasting required · Turnaround Set up: Mon-Sat

    Method and collection
    Method
    Chromatography
    Preparation
    Overnight fasting is required
    Collection
    Patients should be 18 years of age or greater. Separate from cells within 24 hours after clotting. Send serum in an amber tube. If an amber tube is not available, wrap tube in aluminum foil to protect from light.
    Quest Diagnostics catalog page

  • Vitamin A (Retinol) 921

    Serum · Fasting required · Turnaround Set up: Mon-Sat (10:00 a.m.); Report available: 2-4 days

    Method and collection
    Method
    Chromatography
    Preparation
    Overnight fasting is required
    Collection
    Allow blood to clot at room temperature for 30 minutes. Centrifuge to separate serum from the cells within 24 hours of collection and immediately pour serum into a plastic transport tube.
    Quest Diagnostics catalog page

Panels that include this biomarker

  • Micronutrients, Antioxidants Panel 10187

    4 analytes · Serum · Fasting required

    Method and collection
    Method
    Chromatography • Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
    Preparation
    Overnight fasting required. Avoid taking Coenzyme Q10 supplements the morning of the test. Refrain from eating fruits or taking vitamin C supplements 24 hours prior to collection.
    Collection
    Patients should be 18 years of age or greater. Gently invert specimen 5 times (DO NOT SHAKE!), allow to clot for 30-60 minutes at room temperature, centrifuge 10 minutes. Separate serum into 3 amber plastic transport tubes: 1 mL (0.5 mL min) for Vitamin A and E, protect from light, ship frozen (can be refrigerated). 1 mL (0.5 mL min) for Vitamin C, freeze immediately, protect from light, ship frozen. 1 mL (0.5 mL min) for CoQ10, protect from light, ship refrigerated. Do not ship on dry ice. Coenzyme Q10 must NOT be shipped on dry ice. Vitamin C must be shipped on dry ice. Additionally, for remote collection sites, or those with no access to ultra-low freezers or dry ice, it is recommended to schedule patient visits/draws after 12:00 p.m. local time and store the samples at -10° C to -30° C freezers (stable for 8 hours) until picked up by courier. Couriers should then transfer samples to -70° C storage (on dry ice) while enroute to the performing site location.
    Reference notes
    Coenzyme Q10 (CoQ10) | >35 ug/mL Vitamin A (Retinol) 18-19 years | 26-72 mcg/dL >19 years | 38-98 mcg/dL Reference range not available for individuals <18 years for this micronutrient test. Vitamin C Male ≥18 years | 0.2-2.1 mg/dL Female ≥18 years | 0.3-2.7 mg/dL Reference range not available for individuals <18 years for this micronutrient test. Vitamin E Vitamin E, Alpha Tocopherol | ≥18 years | 5.7-19.9 mg/L Vitamin E, Beta-Gamma Tocopherol | ≥18 years | <4.4 mg/L Reference range not available for individuals <18 years for this micronutrient test.
    Quest Diagnostics catalog page

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Sources

Verify these ranges and sources

We compile this page from named laboratory catalogs, guidelines and studies. Labs calculate reference intervals from the people they test, for one assay method and one population group, so an interval describes that population rather than an optimal target.

Interpret your own results with a licensed clinician, or track your lab history and health goals in Aumnivida.

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