3021399
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Neurofilament Light Chain, Plasma

NFLC P

Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation

Discontinue biotin supplements (vitamin B7 or B8, vitamin H, or coenzyme R) for 72 hours prior to collection.

Collect

Lavender (K2EDTA).

Specimen Preparation

Separate from cells and transfer 1 mL plasma to an ARUP standard transport tube. (Min: 0.7 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.

Storage/Transport Temperature

Room temperature. Also acceptable: Refrigerated or frozen.

Unacceptable Conditions
Remarks
Stability

Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 weeks

Methodology

Quantitative Electrochemiluminescent Immunoassay (ECLIA)

Performed

Varies

Reported

3-6 days

Reference Interval

Refer to report

Interpretive Data



Compliance Category

Performed by non-ARUP Laboratory

Note

Direct comparisons of absolute values can only be done on the same source fluid (serum or plasma).

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
09/08/2026
X
N/A

CPT Codes

83884

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Components

Component Test Code* Component Chart Name LOINC
3021401 Neurofilament Light Chain, Plasma 101281-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • NfL
Neurofilament Light Chain, Plasma

LabCorp