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Serum or plasma concentration of a biomarker related to nausea (e.g., electrolytes, hormones, or inflammatory markers)

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

This test measures levels of substances in your blood that may be linked to nausea, helping doctors understand potential causes like dehydration, hormonal imbalances, or infections.

Quick summary

["This test helps identify underlying conditions causing nausea by checking key blood components."]

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

Key facts at a glance

LOINC
28391-1
Short code
NAUSEA
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
reported-hiv-ssc
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 Might Be Ordered

Your doctor may request this test if you experience persistent nausea, especially if it’s accompanied by other symptoms like vomiting, dizziness, or changes in your appetite. It can help pinpoint whether nausea stems from dehydration, electrolyte imbalances, hormonal fluctuations, or other systemic issues.

Common Causes of Nausea Detected by This Test

Nausea can arise from various conditions, including dehydration (low fluid levels), electrolyte disturbances (e.g., low potassium or sodium), hormonal imbalances (like thyroid issues), or infections (e.g., viral or bacterial). This test may focus on substances like electrolytes, hormones, or markers of inflammation.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours if testing specific hormones or substances. Bring any medications you’re taking to your appointment.

During the Test Process

A healthcare provider will collect a blood sample from your arm. The process is quick and typically painless, though you might feel a slight pinch. The sample is then sent to a lab for analysis.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

What does this test measure?
This test measures the concentration of specific substances in your blood that may be linked to nausea, such as electrolytes (e.g., sodium, potassium), hormones (e.g., thyroid-stimulating hormone), or markers of inflammation. The exact substances depend on the clinical context and your doctor’s orders.
How long does it take to get results?
Results are usually available within 1 to 3 business days, depending on lab processing times. Your doctor will discuss the findings with you during your follow-up visit.
Can I eat or drink before this test?
Most blood tests for nausea-related biomarkers do not require fasting, but follow your doctor’s specific instructions if testing for substances like glucose or hormones. Generally, you can eat and drink normally unless advised otherwise.
  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