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Lumipulse® pTau-217/Beta Amyloid 42 Ratio, Plasma-994

Test info

Test name:

Lumipulse® pTau-217/Beta Amyloid 42 Ratio, Plasma

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

217/42
patu217/42 ratio
ptau217/Abeta42 ratio
Lumipulse®

Useful for:

The Lumipulse G pTau 217/β-Amyloid 1-42 Plasma Ratio is indicated for adult patients, aged 50 years and older, presenting at a specialized care setting with signs and symptoms of cognitive decline.

Specimen

Specimen type:

EDTA plasma

Collection container:

Lavender (EDTA), 4mL

Volume:

1 mL

Minimum volume:

0.75 mL

Collection instructions:

Immediately following collection, mix sample thoroughly by gentle inverting 8 - 10 times, to prevent clotting

Processing instructions:

Spin within 2 hours of collection
Immediately transfer the plasma into a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp).
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Transport and stability:

Frozen (preferred) - 1 month

Refrigerated - 1 day

Ambient - 3 hours

Reason for rejection:

Serum specimen
Hemolyzed, lipemic, or heat treated specimen
Gross bacterial contamination

Performance

Performing lab:

LabCorp (505809); R-NX

TAT:

5 - 7 days

Method:

Fujirebio Lumipulse chemiluminescent enzyme immunoassay (CLEIA)

Clinical and Interpretive info

Reference ranges:

See report

Billing

CPT codes:

83520 x2

Tracking

Date created:

11/14/2025

Review date:

11/14/2025