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HelpTest Code NFLP Neurofilament Light Chain, Plasma
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: None
Submission Container/Tube: Plastic screw-top vial
Specimen Volume: 0.6 mL
Collection Information: Centrifuge and aliquot plasma into a plastic vial. Do not submit specimen in original tube.
Specimen Type
EDTA PlasmaSpecimen Minimum Volume
0.50 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| EDTA Plasma | Refrigerated (preferred) | 14 days |
| Frozen | 90 days | |
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | OK |
Reference Values
<2.5 years: ≤12.8 pg/mL
2.5 to 4 years: ≤11.8 pg/mL
5 to 9 years: ≤10.4 pg/mL
10 to 14 years: ≤8.8 pg/mL
15 to 19 years: ≤9.2 pg/mL
20 to 24 years: ≤10.4 pg/mL
25 to 29 years: ≤11.9 pg/mL
30 to 34 years: ≤13.5 pg/mL
35 to 39 years: ≤15.3 pg/mL
40 to 44 years: ≤17.3 pg/mL
45 to 49 years: ≤19.7 pg/mL
50 to 54 years: ≤22.4 pg/mL
55 to 59 years: ≤25.4 pg/mL
60 to 64 years: ≤28.8 pg/mL
65 to 69 years: ≤32.7 pg/mL
70 to 74 years: ≤37.1 pg/mL
75 to 79 years: ≤42.1 pg/mL
80 to 84 years: ≤ 47.8 pg/mL
≥85 years: ≤54.3 pg/mL
Day(s) Performed
Monday through Friday
Report Available
1 to 3 daysSpecimen Retention Time
3 monthsPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
83884