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Cerebrospinal Fluid (Spinal Fluid) With Nonionic Contrast — Deprecated

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

This deprecated designation refers to spinal-fluid testing performed when nonionic contrast was present. The current report must identify the specific analyte and method.

Quick summary

["This is an older CSF test designation, so ask your clinician what specific analysis was performed before interpreting the result."]

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

Key facts at a glance

LOINC
42016-6
Short code
Deprecated T-spine Flr W Non-ionic contr
Synonyms
Deprecated T-spine Flr W Non-ionic contr
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr-fluor
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 is this test?

This name appears to represent a deprecated cerebrospinal fluid test or specimen designation associated with nonionic contrast, a type of material used in certain spinal imaging procedures. The slug does not identify a specific analyte, so the original laboratory report is needed to determine exactly what was measured.

Why might I need this test?

Spinal fluid may be examined for signs of infection, inflammation, bleeding, or other neurologic conditions. Testing may also be requested after spinal imaging, although current laboratory practices and collection protocols can differ from this older designation.

How is the test performed?

Cerebrospinal fluid is usually collected through a lumbar puncture. If nonionic contrast was used during a spinal imaging procedure, the laboratory may record that information because it can affect the interpretation of some results.

How do I prepare for the test?

Follow your clinician's instructions regarding imaging, contrast exposure, and lumbar puncture. Tell the care team about any prior contrast reaction, medication use, bleeding disorder, or other relevant medical condition.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Deprecated CSF test with nonionic contrast

Frequently asked questions

Does this test still exist under the same name?
It is marked as deprecated, meaning this is an older test or specimen name that may no longer be used. A current report should use a more specific analyte and method name.
What is nonionic contrast?
Nonionic contrast is a contrast material used to make spinal structures easier to see during imaging. Its presence may be documented as part of the specimen details.
How should I interpret my result?
Review the result with your clinician because the meaning depends on the exact analyte, the method, and your symptoms. The same numerical result can have different implications in different clinical situations.
  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