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Ghrelin (Serum or Plasma, Mass Concentration)

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

This test measures the amount of ghrelin, a hormone produced mainly in the stomach that helps regulate hunger and metabolism.

Quick summary

["Ghrelin helps control appetite and energy balance; levels may be checked for conditions affecting hunger or metabolism."]

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

Key facts at a glance

LOINC
90048-0
Short code
GHBP SerPl IA-mCnc
Synonyms
GHBP SerPl IA-mCnc
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
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 recommend this test if you have symptoms like unexplained weight changes, appetite issues, or suspected hormonal imbalances. It could also be part of evaluations for conditions like Prader-Willi syndrome, gastrointestinal disorders, or metabolic 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 blood draw. Wear comfortable clothing and let your doctor know about any medications you’re taking.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. The sample is then sent to a lab for analysis using a sensitive method to measure ghrelin levels.

What the Results Mean

Results are compared to a reference range, but exact values can vary by lab. High or low levels may signal potential conditions, but they’re not diagnostic alone. Your doctor will discuss findings in relation to your symptoms and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Ghrelin Level

Frequently asked questions

What Are Common Causes of Abnormal Results?
Elevated ghrelin levels may be linked to certain cancers (e.g., stomach or pancreatic), rare genetic disorders, or stress-related conditions. Low levels could suggest obesity, hypothyroidism, or certain medications. Always consult your doctor for interpretation.
How Often Should I Get This Test?
This test is typically ordered as needed based on your symptoms or medical needs. Routine screening isn’t standard unless recommended by your healthcare provider.
Can I Take Anything Before or After the Test?
Avoid eating or drinking (except water) for 8–12 hours before the blood draw. Afterward, you can resume normal activities. If you’re unsure, ask your lab technician or doctor.
  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