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24-Hour Zinc Intake Measurement

Published: August 9, 2026Updated: August 16, 2026

This test measures the total amount of zinc you consume over a 24-hour period, helping assess dietary zinc intake.

Quick summary

["Understanding your zinc consumption can help identify dietary deficiencies or excesses."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
81089-5
Short code
Zinc intake 24h Est
Synonyms
Zinc intake 24h Est
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
20
Ref high
400
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
estimated
CPT
82670
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms of zinc deficiency (such as weakened immunity, hair loss, or slow wound healing) or if you’re suspected of consuming unusually high zinc levels (e.g., from supplements or contaminated food). It can also be used in research or clinical studies to evaluate dietary habits.

What to Expect Before the Test

No special preparation is needed. You’ll simply record or report your zinc consumption (foods, supplements, or other sources) for a full day, then provide a summary to your doctor.

How the Test Works

Zinc intake is calculated based on your reported dietary intake, including foods like meat, seafood, nuts, and fortified grains, as well as any supplements or accidental exposures (e.g., from contaminated water).

What the Results Mean

Results are qualitative (qualitative assessment of intake rather than a lab measurement) and compare your intake to general dietary guidelines for zinc. Low intake may indicate dietary gaps, while high intake could signal excessive supplementation or exposure.

Reference range

Premenopausal: 20-400 pg/mL; Postmenopausal: <30 pg/mLN/A

Specimen: serum

No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Zinc Intake (24h)

Frequently asked questions

What questions might you have?
This test focuses on intake rather than blood levels, so it doesn’t directly diagnose deficiencies or excesses. If your intake is unusually low or high, your provider may recommend further testing (e.g., blood zinc levels) or dietary adjustments.
How is this different from a blood zinc test?
A blood zinc test measures your current zinc levels in your body, while this test tracks what you’ve eaten or consumed over 24 hours. Both are useful but serve different purposes—intake helps assess diet, while blood levels help assess absorption and storage.
Can I adjust my zinc intake based on this test alone?
No. This test provides a snapshot of your intake but doesn’t evaluate how well your body absorbs or uses zinc. Always follow your healthcare provider’s advice for dietary changes or supplement use.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy