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Serum or plasma mass concentration of zinc (total)

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

This test measures the amount of zinc, a mineral essential for many bodily functions, in your blood. Zinc helps support immune function, wound healing, and metabolism.

Quick summary

["Zinc levels can help assess nutritional status and identify potential deficiencies or excesses."]

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

Key facts at a glance

LOINC
57323-8
Short code
VZV IgM sp2 Ser IA-aCnc
Synonyms
VZV IgM sp2 Ser IA-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82784
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 Is This Test Done?

Your healthcare provider may order this test to check for zinc deficiency, which can cause symptoms like hair loss, weakened immunity, or slow wound healing. It may also be used in research or specialized clinical settings where zinc metabolism is being evaluated.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the draw if your lab requires it. Bring any medications or supplements you take regularly to your appointment.

What Happens During the Test?

A healthcare professional will draw blood from a vein in your arm. You may feel a brief pinch, but the process is quick. The blood sample is sent to the lab for analysis.

What to Expect After the Test

You can resume normal activities immediately. There may be a small bruise or slight discomfort at the injection site, but this usually fades within a day or two.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Low zinc levels may indicate malnutrition, gastrointestinal disorders, or certain medical conditions. High levels could suggest kidney disease or zinc toxicity. While less common, abnormal results warrant further evaluation by your provider.

Short name

Zinc Level

Frequently asked questions

What causes zinc deficiency?
Zinc deficiency can result from poor diet (low intake of zinc-rich foods like meat, seafood, or legumes), chronic diarrhea, malabsorption issues (e.g., celiac disease), or certain medications that interfere with zinc absorption.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your provider will discuss the findings with you during your follow-up visit.
Can I take zinc supplements if my levels are low?
Only follow your healthcare provider’s advice regarding zinc supplements. Excessive intake can be harmful, and they’ll determine the safest dosage or treatment plan for you.
  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