Test directory: Phosphorylated tau217 (p-tau217)

Ordering Code 8543
Test Name Phosphorylated tau217 (p-tau217)
Alias Quest AD-Detect Phosphorylated tau217 (p-tau217),
Plasma
pT217
217P
Tau protein
pTau species 217
Preferred Specimen Plasma
Preferred Container EDTA, K2 (Lavender)
Optimum Volume 1 mL
Collection Instructions Patients should be cautioned to stop biotin consumption at least 72 hours prior to collection of a sample
Handling Instructions Centrifuge and separate plasma
Transport Requirements Oahu: Ambient
Airline: Refrigerated
Specimen Stability Ambient: 5 Days
Refrigerated: 14 Days
Frozen: 28 Days
Avail. Stat NO
Analytic Time 7 Days
Methodology Immunoassay (IA)
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of May 22, 2026.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
AD Detect p-tau217, P ALL See report.