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Basic Metabolic Panel and Comprehensive Liver Function Screening

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

This test checks your blood for key measures of kidney function, liver health, and electrolyte balance, often done as part of general health screening.

Quick summary

["Essential for monitoring organ health and detecting potential issues early."]

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

Key facts at a glance

LOINC
42174-3
Short code
FFDM Brst-Bl screening
Synonyms
FFDM Brst-Bl screening
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mg-ffd
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

The test includes several blood measurements: sodium, potassium, chloride, bicarbonate (to assess acid-base balance), blood urea nitrogen (BUN) and creatinine (to evaluate kidney function), and liver enzymes (such as alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase) along with bilirubin and albumin (to check liver function).

Why It’s Done

This screening is typically ordered for general health checks, before surgeries, to monitor chronic conditions like diabetes or kidney disease, or if you have symptoms like fatigue, nausea, or unexplained weight changes.

Common Uses and Timing

Results may be used to detect early signs of kidney problems, liver disease, dehydration, or metabolic imbalances. Some tests, like liver enzymes, can also indicate inflammation or damage to the liver.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for certain liver tests (like albumin or bilirubin) if instructed by your provider. Drink plenty of water the day before to help your kidneys function properly.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BMP + Liver Function Screen

Frequently asked questions

How long will I need to wait for results?
Results are usually available within 24 to 72 hours, depending on your lab. Your healthcare provider will discuss them with you during your follow-up visit.
Can I eat or drink anything before this test?
For general BMP tests, you can eat and drink normally. If your provider specifies liver-related tests (e.g., albumin), follow fasting instructions, usually 8–12 hours before the test.
What does it mean if my results are outside the normal range?
If results are abnormal, your provider will explain what it means and may recommend further testing or adjustments to your treatment plan. Always discuss findings with your healthcare team.
  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