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Zinc mass concentration in serum

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

This test measures the amount of zinc, a mineral essential for many bodily functions, in your blood serum.

Quick summary

["Zinc helps support immune function, wound healing, and metabolism—low levels may indicate nutritional deficiencies or health concerns."]

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

Key facts at a glance

LOINC
5762-0
Short code
Zinc Smn-mCnc
Synonyms
Zinc Smn-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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, especially if you have symptoms like frequent infections, slow wound healing, or unusual fatigue. It can also be part of a broader evaluation for conditions like diabetes, Crohn’s disease, or malabsorption disorders.

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 uses fasting protocols. Bring any medications or supplements you’re taking to your appointment.

How the Test Works

A blood sample is taken from a vein in your arm. The sample is sent to a lab where advanced techniques measure zinc’s concentration in your serum.

Possible Results and Interpretation

Results are compared to general reference ranges for healthy adults. Low zinc levels may prompt further testing or dietary adjustments, while high levels could signal conditions like kidney disease or certain medications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Zinc Level

Frequently asked questions

What might low zinc levels mean?
Low zinc levels can signal malnutrition, poor absorption (e.g., from gastrointestinal issues), or chronic illnesses like diabetes or inflammatory bowel disease. Your provider may recommend supplements or dietary changes to address the deficiency.
Could high zinc levels be dangerous?
Excess zinc in the blood is less common but may occur with kidney problems or overuse of supplements. High levels can interfere with copper absorption, potentially weakening immune function or bone health.
Does this test interact with any medications?
Yes, certain medications (e.g., antibiotics like tetracycline or zinc supplements) can affect zinc levels. Always inform your provider about all medications, including over-the-counter drugs and herbal products.
  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