Zinc Test
A zinc test measures the amount of this essential mineral in your blood. Zinc supports immune function, wound healing, and the senses of taste and smell, and clinicians use the marker to help evaluate zinc status.
About this test
Zinc is an essential trace mineral that shows up in an enormous number of the body's processes. It supports the immune system, plays a part in wound healing, contributes to a normal sense of taste and smell, and helps enzymes throughout the body do their work.
The test is done with a simple blood draw at a patient service center. A phlebotomist collects a sample from a vein in the arm, and it is sent to the laboratory.
Who might consider this test?
- Also looked at in situations where intake or absorption may fall short over time — restrictive or largely plant-based diets
- Digestive conditions that affect how minerals are taken up
Test details
| Quest code | 945 |
|---|---|
| Methodology | Inductively Coupled Plasma/Mass Spectrometry |
| Sample type | 2 mL plasma |
| Collection | Quest patient service center |
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Additional details
What this test looks at
A zinc test reports how much of the mineral is present in a blood sample. Zinc acts as a helper for many enzymes and for the immune system, so a long-running shortfall can surface in scattered ways — from how wounds heal to how food tastes. Measuring the circulating amount gives a clinician a reference point for whether zinc belongs in the conversation.
The amount in the blood can be nudged by everyday factors such as recent meals, the time of day, and even how a sample is drawn, so a clinician reads a single measurement as one view rather than a fixed figure.
How clinicians use zinc in context
Zinc is sometimes interpreted alongside copper, because the body manages these two minerals in a connected way and a heavy intake of one can influence the other. A clinician also weighs the result against a person's diet, digestive health, and the symptoms that prompted the test.
The measurement is meant to start a conversation with a clinician rather than to answer a question by itself. From there, a clinician decides in context whether any further evaluation is worth considering.
Order online and a physician order is included — no doctor's visit and no insurance needed. Your sample is collected at a Quest Diagnostics patient service center.
Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.
Frequently asked questions
What does a zinc test measure?
It measures the amount of zinc in the blood. Zinc is an essential trace mineral that supports immune function, wound healing, and the senses of taste and smell, and the measurement reflects zinc status.
Who commonly orders a zinc test?
People exploring symptoms such as slow wound healing, changes in taste or smell, or frequent infections often discuss it with a clinician, as do those with restrictive diets or digestive conditions that can affect how minerals are absorbed.
How is the sample collected?
Through a routine blood draw at a patient service center. A phlebotomist takes a small sample from a vein in the arm and sends it to the laboratory, which follows careful handling steps for mineral testing.
Why are zinc and copper sometimes tested together?
The body manages zinc and copper in a linked way, so a heavy intake of one can influence the other. A clinician may look at both to understand the balance, especially when supplements are involved.
Can everyday factors affect a zinc result?
Yes. Recent meals, the time of day, and how a sample is drawn can nudge a zinc reading, which is why a clinician reads a single measurement as one view rather than a fixed figure.
How much does the Zinc test cost?
The cash price at Celio Health is $49. That covers the physician's order and sample collection at a Quest patient service center — no insurance is needed and there's no separate doctor's visit to pay for.