Stanford Hospital & Clinics and Lucile Packard Children’s Hospital
Test Name : Blood Culture Differential Time to Positivity Order Code : BLCTTP
Synonyms: BLCTTP; Catheter Related Blood Culture Protocol; Catheter Related Blood Stream; Infection Catheter Tip Culture - CTC; Time to Positivity - TTP
Specimen Type: Whole Blood
Container Type: 4 Aerobic Blood Culture Bottles
Required Volume: 10 mL per bottle (4 bottles)
Minimum Volume (Pediatric): If <10 mL per bottle, equal volume of blood must be inoculated into all four bottles.
Methodology: Automated Blood Culture Instrument
Components: Blood Culture (Catheter), Blood Culture (Peripheral)
Standard Run Times: Daily
Turnaround Time: 5-7 days
Special Handling: Two sets of blood cultures (2 aerobic bottles per set) must be drawn within 10 minutes of each other, first set obtained via peripheral vein phlebotomy stick, second set obtained through the venous catheter. Equal volume of blood must be inoculated into all four bottles. Do not refrigate. Room temperature.
CPT Codes: 87040
Causes For Rejection: Improperly labeled specimen; improperly completed requisition; specimen in wrong container; catheter draw and peripheral draw not collected within 10 minutes of each other.
Department: Microbiology