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Serum/plasma mass concentration of albumin

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of albumin, a protein found in your blood, which helps maintain fluid balance and supports immune function.

Quick summary

["Albumin levels can indicate kidney function and overall protein status."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
23916-0
Short code
OF .55% NaCl NFr RBC
Synonyms
OF .55% NaCl NFr RBC
Category
electrolyte
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
4.2
Ref high
5.9
Critical range
2 N/A – 7 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85041
SNOMED
900000000000003001
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 Albumin Levels Matter

Albumin is crucial for keeping fluids in your blood vessels and transporting nutrients. Low levels may suggest kidney disease, malnutrition, or liver problems, while high levels could be linked to dehydration or certain medical conditions.

What Causes Albumin Levels to Change?

Albumin levels can drop due to kidney disease, severe infections, malnutrition, or liver disorders. They may rise in cases of dehydration, severe burns, or certain medications.

How Is This Test Performed?

A blood sample is drawn from a vein, usually in your arm. The sample is then processed to measure albumin concentration using a specialized lab test.

What Do Results Mean?

Results help doctors assess your overall health, especially if you have kidney issues, chronic diseases, or recent weight changes. Your doctor will interpret results in the context of your medical history.

Reference range

Adult males: 4.2-5.9; Females: 3.8-5.1 x 10^12/LN/A

Specimen: serum

No special preparation required. Stay well hydrated.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin Level

Frequently asked questions

How often should I get this test?
Your doctor will determine how often you need this test based on your health condition. Regular monitoring may be needed if you have kidney disease, liver problems, or other chronic illnesses.
What are the typical reference ranges?
Reference ranges vary by lab, but typical adult values for albumin in serum/plasma are around 3.5 to 5.0 grams per deciliter (g/dL). These ranges can differ slightly depending on the lab’s methods and patient demographics.
Can diet affect my albumin levels?
Yes, diet can influence albumin levels. Eating a balanced diet rich in protein and nutrients may help maintain healthy levels, while poor nutrition or excessive protein loss can lead to lower albumin.
  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 17, 2026. · Read our editorial policy