Phosphorylated tau181(p-tau181), Plasma
Also known as 181, Ptau, PhosphoTau-181P, P tau, ptau 181
What it measures
- PTAU181, PlasmaLOINC 103675-5
Before the visit
Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.
Specimen
- Specimen
- 1 mL plasma collected in an EDTA (lavender-top) tube
- Minimum volume
- 0.5 mL
- Container
- Transport tube
- Temperature
- Room temperature
Turnaround
Set up: Mon-Sat
Billing
CPT 84393