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Quest Diagnostics

Laboratory Services • Frederick, MD

★☆☆☆☆1.3/57 reviews across 4 platforms

Ratings by platform

  • Yelp (Quest Diagnostics - Frederick) (18 reviews)
  • Apple Maps (Quest Diagnostics - Frederick)
  • Birdeye (Quest Diagnostics - 165 Thomas Johnson Dr location): 3.2 (180 reviews)
  • ComplaintsBoard (Quest Diagnostics overall): 1.3/5 (7 reviews)

What patients say

Patients praise

  • Some reviewers report positive experiences with specific staff (professional/kind/efficient).

Common complaints

  • Long wait times and wasted time in the lobby
  • Unhelpful or unprofessional staff interactions (including appointment/check-in/billing issues)
  • Billing/payment confusion and difficulty resolving issues
  • General lack of regard for patient time / poor logistics and customer service
  • Phlebotomy issues or poor technique causing pain/bruising/concerns
  • High complaint volume indicating widespread dissatisfaction

In patients' words

"“Very disappointed… the phlebotomist… She stuck me then kept pulling needle almost out and gouging me… I am sore, bruised and have a huge knot…”"

— ConsumerAffairs first-hand experience (Quest Diagnostics)

"“Most reviewers were unhappy with their experience overall. Many people were dissatisfied… long wait times… lack of regard for patient time… difficulty reaching a real person”"

— Trustpilot review summary for Quest Diagnostics website

"“Quest Diagnostics has an overall reputation rating of 1.3/5… based on 7 reviews and 492 complaints… majority of patients are dissatisfied”"

— ComplaintsBoard summary (Quest Diagnostics)

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5][6][7][8].

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