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Analyte Challenges per Shipment Number of Shipments
Calcium, ionized 3 Two shipments per year
Chloride 3
Hematocrit 3
Hemoglobin, estimated 3
Lactate 3
Magnesium, ionized 3
pCO2 3
pH 3
pO2 3
Potassium 3
Sodium 3
Creatinine 3
Glucose 3
Urea nitrogen (BUN) 3

This program does not meet regulatory requirements for proficiency testing; see programs AQ, AQH, and AQIS.
It is not appropriate to report hemoglobin and hematocrit results by co-oximetry in these programs.

Additional Information

Quality Cross Check is a convenient solution to monitor instrument performance and assess comparability across multiple instruments in your laboratory and to identify potential issues before they affect patient results. These programs are designed to complement your existing proficiency testing (PT) and maintain compliance with the CMS directive regarding PT on multiple instruments.

How It Works:

  • Receive three challenges in each of two mailings a year.
  • Report up to three instruments for each challenge.
  • Receive a custom report package that includes peer group comparison and instrument comparability statistics for each reported analyte.

Program Information

  • Three 2.5‑mL specimens in triplicate
  • Three 2.5‑mL specimens for hematocrit testing in triplicate
  • Appropriate for all methods except i-STAT®
  • Report up to three instruments
  • Conventional and International System of Units (SI) reporting offered

Shipping Schedule

  • Shipment A: March 15
  • Shipment B: August 26