The California Thoracic Society is
a chapter of the American Thoracic Society (ATS)

Proficiency Testing Program

ABG, Electrolyte+ and CO-Oximetry
Proficiency Testing Program 


  • Approved by the CMS, the Commission on Office Laboratory Accreditation (COLA), and CAP.
  • Meets CMS (CLIA '88) and California state requirements for Blood Gas (pH, pCO2 and pO2), Electrolytes+ (CL-, K+ and Na+, glucose), Co-Oximetry (total Hb) PT, and hematocrit.
  • Access to expert reference lab technicians for telephone/email consultation and one-on-one assistance.
  • Computerized statistical analyses and inter-laboratory comparison with peers, using CLIA ’88 scoring criteria and evaluation processes.

LINK: CTS PT Central

Please visit if any Supplemental Instruction documents are misplaced 

Other CTS PT / Order Forms:

Other Proficiency Testing Links:

WEBINAR: The Nuts and Bolts of Proficiency Testing (PT): 
Everything You Wanted to Know About PT

Presented by the California Thoracic Society Proficiency Testing Program
This webinar aired on November 8th, 2013

Download Presentation (PDF)  / Audio Recording of Presentation


2014 Calendar Year

Cycle 1 - 2014

  • March 3, 2014 - Cycle 1 of year 2014; samples shipped to labs.
  • March 11, 2014 - No Samples? Call 1-888-450-4633
  • March 21, 2014 - DATA INPUT FORMS DUE
  • May 5, 2014 - Labs receive Cycle 1 Reports. REVIEW immediately.
  • May 20, 2014 - FINAL lab reports submitted to reporting agencies.

Proficiency Testing (PT) Committee

2014 Proficiency Testing Action Calendar (PDF)

2014 PT Program Enrollee Reference Manual (PDF)


575 Market Street Suite 2125 San Francisco, CA 94105
(P) 415-536-0287 (F) 415-764-4933
Copyright 2010 California Thoracic Society since 1940