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Microbial Resistance Mutation Type Identification (Serum/Plasma)

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

This test helps identify specific genetic mutations in bacteria or viruses that may contribute to antibiotic resistance, aiding in tailored treatment planning.

Quick summary

["Understanding how microbes may resist treatments can guide better infection management."]

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

Key facts at a glance

LOINC
92247-6
Short code
Micro resist mut AA change type Islt/Spm
Synonyms
Micro resist mut AA change type Islt/Spm
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
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 Is Done

Doctors may order this test if you have an infection that doesn’t respond to standard antibiotics, or if you’re at higher risk of resistant infections (e.g., long-term hospital stays, weakened immune system). It helps pinpoint which mutations might be causing resistance, allowing for more precise treatment choices.

How the Test Works

A small blood sample is taken to detect genetic changes in microorganisms. Advanced lab techniques analyze DNA or RNA sequences to identify resistance-related mutations. Results help match treatments to the specific microbial profile.

Sample Collection and Preparation

Blood is drawn from a vein, usually in your arm. The sample is processed to isolate microbial genetic material for testing. This test is typically done in specialized labs focused on infectious disease genetics.

What to Expect Before the Test

No special preparation is needed, but inform your doctor about any recent infections, medications (especially antibiotics), or medical conditions that might affect results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Microbial Mutation Profile

Frequently asked questions

Does this test require fasting?
No fasting is required for this test.
How long will it take to get results?
Results may take several days to a couple of weeks, depending on lab processing and sequencing complexity. Follow-up with your healthcare provider for interpretation.
Can this test be done on other body fluids?
Primarily performed on blood samples, but some specialized labs may analyze other fluids (e.g., cerebrospinal fluid) if clinically indicated for specific infections.
  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