Skip to content

Serum or plasma mass concentration of zinc

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

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

Quick summary

["Zinc helps support immune function, wound healing, and metabolism."]

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

Key facts at a glance

LOINC
109520-7
Short code
VZV DNA Msmt Bld
Synonyms
VZV DNA Msmt Bld
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
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, weakness, or frequent infections. It may also be used to monitor zinc levels in people with certain medical conditions, such as chronic illnesses or malabsorption disorders, or those taking certain medications that affect zinc absorption.

What to Expect Before the Test

No special preparation is usually needed. You may be asked to fast for 8–12 hours before the test if your blood is drawn from a vein (venipuncture). If a fingerstick is used, no fasting is required. Wear comfortable clothing and bring your medical records if you have any known conditions.

What Happens During the Test?

A healthcare professional will collect a blood sample from a vein in your arm or, less commonly, from a small cut on your fingertip. The sample is then sent to a lab for analysis. The process takes a few minutes, and you may feel a brief pinch or discomfort.

What Are Possible Results?

Results are reported as a mass concentration (typically in micrograms per deciliter, µg/dL). Your results will be interpreted by your healthcare provider in the context of your overall health and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Zinc Level

Frequently asked questions

What Does Low or High Zinc Levels Mean?
Low zinc levels may indicate deficiency, which can weaken your immune system, slow wound healing, or cause neurological symptoms. High levels can sometimes be linked to kidney disease or certain genetic conditions but are less common and require further evaluation.
How Often Should I Get This Test?
Your healthcare provider will determine the frequency based on your health status, symptoms, or treatment plan. Regular monitoring may be needed if you have chronic conditions or take medications that affect zinc levels.
Can I Eat or Drink Before the Test?
If fasting is required, avoid food and liquids (except water) for 8–12 hours before the blood draw. If fasting isn’t needed, you can eat and drink normally, but avoid caffeine or alcohol before testing.
  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