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Panculture Antibiotic Resistance Phenotypic Testing (Serum/Plasma)

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

This test checks how certain bacteria in your bloodstream respond to antibiotics by growing them in the lab and observing which antibiotics inhibit their growth.

Quick summary

["Helps identify potential antibiotic resistance patterns before starting treatment."]

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

Key facts at a glance

LOINC
72522-6
Short code
p-ANCA frmln resist IgG SerPl Ql IF
Synonyms
p-ANCA frmln resist IgG SerPl Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Critical range
0.5 N/A – —
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
CPT
82784
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 involves culturing blood samples to isolate bacteria, then exposing them to multiple antibiotics. It measures bacterial growth inhibition zones to determine resistance patterns.

Why It’s Done

Doctors may order this test if you have a suspected bacterial infection and need to confirm antibiotic resistance before prescribing treatment.

Common Uses

Primarily used in clinical microbiology labs to guide empirical antibiotic therapy, especially in severe infections where rapid resistance identification is critical.

Sample Collection and Processing

Blood is drawn and processed to isolate bacterial cultures. Results are qualitative (positive/negative) for antibiotic susceptibility, not quantitative.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Antibiotic Resistance Screening (Serum/Plasma)

Frequently asked questions

This test helps prevent overuse of antibiotics by confirming resistance patterns, reducing unnecessary treatments and potential antibiotic resistance development.
This test does not provide specific antibiotic resistance results directly; it’s a screening step to identify bacterial presence and guide further testing.
This test is typically performed in a clinical microbiology lab and may take several days to complete, depending on bacterial growth.
You may need to fast or avoid certain medications before this test, but follow your healthcare provider’s instructions.
Antibiotic resistance patterns can vary by bacterial strain and geographic location; results may differ from other testing methods.
If you have allergies to antibiotics or recent infections, inform your doctor before this test.
  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