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Serum or Plasma Immunoassay for Anti-Spirillum Antibodies (Qualitative or Quantitative)

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

This test detects antibodies in your blood that may indicate exposure to *Treponema spiralis*, a bacterium linked to certain parasitic infections.

Quick summary

["Helps diagnose or monitor infections caused by *Treponema spiralis* through antibody detection."]

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

Key facts at a glance

LOINC
17733-7
Short code
T spiralis IgA Ser Ql
Synonyms
T spiralis IgA Ser Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 looks for antibodies produced by your immune system in response to *Treponema spiralis*. Antibodies are proteins your body makes to fight infections. If present, they suggest past or current exposure to this bacterium.

Why It’s Ordered

Your healthcare provider may order this test if you have symptoms of parasitic infections (e.g., gastrointestinal issues, fever) or if you’ve been exposed to *Treponema spiralis* (e.g., through contaminated food/water). It can also help confirm a diagnosis in suspected cases.

How the Test Works

Blood is drawn and tested using an immunoassay method to detect specific antibodies against *Treponema spiralis*. This method identifies whether your immune system has recognized and reacted to the bacterium.

Sample Collection

A blood sample is taken from a vein in your arm. The sample is processed into either serum (liquid part after clotting) or plasma (liquid part after centrifugation) for testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Anti-Spirillum Antibody Test

Frequently asked questions

What does a positive result mean?
A positive result suggests your body has produced antibodies against *Treponema spiralis*, indicating past exposure or infection. However, it does not always confirm an active infection without additional clinical correlation.
What does a negative result mean?
A negative result means no detectable antibodies were found in this test sample. This could mean you have never been exposed or the infection has cleared. Further testing or clinical evaluation may still be needed.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Follow-up with your healthcare provider to discuss results and next steps.
  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