Back to Test Catalogue

Procalcitonin, Serum/Plasma

Test ID: PRCAL

Test

Aliases/Synonyms

PCT

Method

Chemiluminescence Immunoassay

Platform

Beckman

Report Includes

Procalcitonin

Specimens

Serum; Plasma (EDTA or Heparin)

Clinical Utility

Persistent elevation of increasing PCT alone is NOT an indication for broadening or adding antibiotic treatment.

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

24-Jun-2024

Specimen

Specimens

Serum; Plasma (EDTA or Heparin)

Collection Containers

Gold top (clot activator & gel);Lavender top (EDTA);Green top (lithium or sodium heparin)

Sample Volume

1 mL

Collection & Handling

Handling Information

Store and send frozen.

Stability

Ambient 16 hours
Refrigerated 7 days
Frozen 90 days

Test Version

24-Jun-2024

Performance / Interpretation

Method

Chemiluminescence Immunoassay

Platform

Beckman

Turnaround Time

2 days

Results

Name Units Reference Range Conversion Factor
Procalcitonin µg/L
  • Adult: < 0.15
  • 0 - 12 hours post-birth < 2
  • 12 - 36 hours post-birth < 10
  • 36 - 72 hours post-birth < 5
  • > 72 hours post-birth < 0.15
ICU Sepsis: Consider discontinuing antibiotics if level is <=0.50 ug/L or an 80% drop from baseline.

Lower Respiratory Tract Infection: Recommendation against antibiotics if level is <=0.25 ug/L

Clinical correlation is required, PCT level does not replace clinical judgment. Persistent elevation or increasing PCT alone is NOT an indication for broadening or adding antibiotic treatment.

Test Location

St. Michael's Hospital, 30 Bond Street, Toronto ON M5B 1W8

Test Version

24-Jun-2024

Interface / Setup

HL7 Interface Codes

Order Code Result Codes Units
PRCAL 62599Procalcitonin ug/L

Test Version

24-Jun-2024