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Serum or plasma concentration of total protein (qualitative or semi-quantitative screening)

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

This test measures the total amount of protein in your blood, which helps assess overall protein levels and identify potential issues like malnutrition, kidney problems, or liver disease.

Quick summary

["Total protein screening helps detect conditions affecting protein balance in your body."]

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

Key facts at a glance

LOINC
20419-8
Short code
LH SerPl IRP1-aCnc
Synonyms
LH SerPl IRP1-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
1.5
Ref high
9
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
st-irp
CPT
83002
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 Is This Test Done?

Your healthcare provider may order this test to check for conditions like malnutrition, kidney disease, liver disease, or dehydration. It can also be part of routine blood work or during evaluations for certain symptoms.

What Does the Test Involve?

A small blood sample is drawn from a vein, usually in your arm. The sample is then sent to a lab for analysis. This test is typically done as part of a general blood test and does not require special preparation.

What Are Common Results?

Results are not always given as a specific number but may be described as normal, low, or high. Your provider will interpret the results in relation to your overall health and medical history.

What Might Abnormal Results Indicate?

Low total protein levels might suggest conditions like malnutrition, severe kidney disease, or liver problems. High levels could indicate dehydration, multiple myeloma, or other rare conditions.

Reference range

Follicular: 1.5-9.0 mIU/mLN/A

Specimen: serum

For females: inform if menstrual cycle status. For certain tests, timing within menstrual cycle may matter.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Protein Screening

Frequently asked questions

What does a qualitative screening test mean for me?
A qualitative screening test provides a general indication (normal, low, or high) rather than precise measurements. Your healthcare provider will discuss the results with you and may order additional tests if needed to get more detailed information.
How often should I get this test?
The frequency depends on your health condition and medical needs. Your provider will determine how often you need this test based on your specific situation, such as chronic illnesses or ongoing treatments.
Can I prepare for this test?
No special preparation is usually needed. However, always follow your healthcare provider’s instructions, as some conditions or medications might affect test results.
  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