Procalcitonin 
Mnemonic PROCAL
CPT 84145
Test Code 7000240
Synonyms ProCT, PCT
Test Includes  
Specimen Serum or Plasma
Volume 1.0 mL
Container SST, Red Top Tube, Light Green Top (Lithium Heparin) Tube
Special Instructions
Specimen Prep Allow SST or Red Top Tube to clot for 30 minutes. Centrifuge all tubes within 2 hours of collection. For Red Top only, transfer serum to Plastic Transport Tube. Avoid hemolysis and do not refrigerate before centrifugation.
Storage 2-8
Transport Temp Refrigerated
Stability Rm Temp 24 hours
Stability Refrig 48 hours
Stability Frozen 6 months
Methodology Enzyme-linked fluorescent assay (ELFA)
Rejection Criteria Grossly hemolyzed, lipemic, or iteric specimens. 
Reference Value Lower Respiratory Tract Infection: <0.10 ng/mL Bacterial etiology highly unlikely. 0.10 - 0.25 ng/mL Bacterial etiology unlikely. 0.26 - 0.50 ng/mL Bacterial etiology likely. >0.50 ng/mL Bacterial etiology highly likely. Sepsis: <= 0.25 ng/mL bacterial etiology highly unlikely. 0.26 - 0.50 ng/mL Bacterial etiology should be considered, depending on clinical suspicion. > 0.50 ng/mL Bacterial etiology highly likely. 
Performed/TAT Monday - Sunday   24 hours    
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