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Comprehensive Metabolic Panel with Electrolytes (Serum/Plasma)

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

This test measures key chemicals in your blood that help your body stay balanced, including electrolytes, blood sugar, and kidney function markers.

Quick summary

["It helps check if your body is getting enough fluids, maintaining proper heart and muscle function, or if your kidneys are working well."]

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

Key facts at a glance

LOINC
24323-8
Short code
Comp Metab 2000 Pnl SerPl
Synonyms
Comp Metab 2000 Pnl SerPl
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

What This Test Measures

Your blood sample will be analyzed for several important substances, including sodium, potassium, chloride, bicarbonate, blood urea nitrogen (BUN), creatinine, glucose, calcium, and sometimes magnesium or phosphate levels. These tests help assess hydration, electrolyte balance, kidney function, and blood sugar levels.

Why It’s Done

Doctors order this test often to monitor chronic conditions like diabetes, kidney disease, or heart conditions, or to check for signs of dehydration, electrolyte imbalances, or metabolic issues after surgery or illness.

Common Conditions Monitored

This panel is frequently used to detect or manage conditions such as dehydration, kidney problems, high or low blood sugar, heart issues, or metabolic disorders like liver disease or electrolyte imbalances.

Sample Collection and Preparation

A small blood sample is drawn from your arm, usually in a clinic or doctor’s office. The blood is then sent to a lab where it is processed into either serum (liquid after clotting) or plasma (liquid after centrifugation) for testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Metabolic Panel with Electrolytes

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within 24 to 48 hours, depending on the lab’s processing speed and whether additional confirmatory tests are needed. Your healthcare provider will discuss the findings with you during your follow-up visit.
What do abnormal results mean?
Abnormal results may indicate problems like dehydration (low sodium, high potassium), kidney issues (high creatinine or BUN), or metabolic imbalances (low glucose, high calcium). Your doctor will interpret these results in the context of your overall health and symptoms.
Can I eat or drink before this test?
For most metabolic panels, you may drink water but avoid eating for a few hours before the test (usually 8–12 hours). Follow any specific instructions your doctor provides, as some tests may require fasting or special diet restrictions.
  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