Quest Diagnostics

CLIA Laboratory Citation Details

1
Total Citation
1
Total Deficiency
1
Unique D-Tag
CMS Certification Number 05D0644027
Address 857 W Childs Road, Merced, CA, 95341
City Merced
State CA
Zip Code95341
Phone(209) 725-0658

Citation History (1 survey)

Survey - November 7, 2025

Survey Type: Standard

Survey Event ID: 9NMV11

Deficiency Tags: D2087

Summary:

Summary Statement of Deficiencies D2087 ROUTINE CHEMISTRY CFR(s): 493.841(a) (a) Failure to attain a score of at least 80 percent of acceptable responses for each analyte in each testing event is unsatisfactory analyte performance for the testing event. This STANDARD is not met as evidenced by: Based on review of the laboratory's proficiency testing (PT) records, and interview with the Technical Supervisor (TS) on November 7, 2025, it was determined that the laboratory failed to attain a score of at least 80 percent of acceptable responses for the routine chemistry analyte Alanine Aminotransferase (ALT) for the second PT event of 2025. The findings included: 1. The laboratory participated in College of American Pathologists (CAP) proficiency testing (PT) program for routine chemistry using the Siemens Dimension analyzer. According to the CAP evaluation report, the laboratory received an unsatisfactory score of 20% for ALT in Q2-2025. 2. On November 7, 2025, at approximately 10:30 am the Technical Supervisor affirmed that the laboratory received the above unsatisfactory proficiency scores. 3. The laboratory's testing declaration form, signed by the laboratory director on September 5, 2025, stated that the laboratory performed approximately 8888 routine chemistry tests including ALT annually. Thus, the accuracy and reliability of patient test reports cannot be determined. Statement of Deficiencies (X1) Provider/Supplier/CLIA Identification Number (X3) Date Survey Completed Name of Provider or Supplier Street Address, City, State -- 1 of 1 --

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