HomeQDI*QUEST DIAGNOSTICS 800-678-6754 PA QDI*QUEST DIAGNOSTICS 800-678-6754 PA ChargeScam.com May 29, 2019 Scam Rating for QDI*QUEST DIAGNOSTICS 800-678-6754 PA users have rated this descriptor so far. [helpful heading="What do you think?"] Note: A user scam rating of 100% likely means that this descriptor is untrustworthy.