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QUALITY CROSS CHECK-CHEM/TDM - CZQ
CZQ
Analyte Challenges per Shipment Number of Shipments
Alanine aminotransferase (ALT/SGPT) 3 Two shipments per year
Albumin 3
Alkaline phosphatase 3
Amylase 3
Aspartate aminotransferase (AST/SGOT) 3
Bilirubin, direct 3
Bilirubin, total 3
Calcium 3
Chloride 3
Cholesterol, total 3
Cortisol 3
Creatine kinase (CK) 3
Creatinine 3
Glucose 3
HDL cholesterol 3
Human chorionic gonadotropin (hCG), quantitative 3
Iron 3
Lactate dehydrogenase (LD) 3
LDL cholesterol 3
Lipoprotein (a) 3
Magnesium 3
Pancreatic amylase 3
Potassium 3
Protein, total 3
Sodium 3
T3, free (triiodothyronine, free) 3
T3, total (triiodothyronine, total) 3
T3, uptake and related tests 3
T4, free (thyroxine, free) 3
T4, total (thyroxine, total) 3
Thyroid-stimulating hormone (TSH) 3
Tryglycerides 3
Urea nitrogen (BUN) 3
Uric acid 3
Acid phosphatase 3
Ammonia 3
Apolipoprotein A1 3
Apolipoprotein B 3
Calcium, ionized 3
Carbon dioxide (CO2) 3
Ferritin 3
Gamma glutamyl transferase (GGT) 3
Iron binding capacity, total (measured) 3
Iron binding capacity, unsaturated (measured) 3
Iron saturation (%) 3
Lactate 3
Lipase 3
Osmolality 3
Phosphorus (inorganic) 3
Prealbumin 3
Transferrin 3
Lithium 3
Acetaminophen 3
Amikacin 3
Caffeine 3
Carbamazepine 3
Carbamazepine, free 3
Digoxin 3
Digoxin, free 3
Disopyramide 3
Ethosuximide 3
Gentamicin 3
Lidocaine 3
Methotrexate 3
N-acetylprocainamide (NAPA) 3
Phenobarbital 3
Phenytoin 3
Phenytoin, free 3
Primidone 3
Procainamide 3
Quinidine 3
Salicylate 3
Theophylline 3
Tobramycin 3
Valproic acid 3
Valproic, acid, free 3
Vancomycin 3

This program does not meet regulatory requirements for proficiency testing. See Survey CZ.


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 5.0‑mL liquid serum specimens in duplicate
  • Report up to three instruments
  • Conventional and International System of Units (SI) reporting offered

Shipping Schedule

  • Shipment A: April 15
  • Shipment B: September 9






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