Test Directory

Test Code
PTLVR
Test Name
Platelet Count, Sodium Citrate Tube
CPT Codes
85049
Expected Turnaround Time
1 day
Clinical Utility

Used to determine the platelet count when clumped platelets were found to be present with the Lavender top (EDTA) tube.

Specimen and Container Info

Specimen Type: Whole Blood

Collection Container: 1 full Light Blue Top (Sodium Citrate)

Collection Instructions

Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.

Processing and Submission Instructions

Do not centrifuge.

Transport Instructions

Transport to the laboratory at room temperature.

Stability Requirements

Room Temperature

24 hours
Causes for Rejection
  • Clotted specimen
  • Specimen not properly filled
Methodology
Automated Analyzer
Reference Intervals
Critical Values
Performing Location
17th Street Hospital, Carbon Hospital, Cedar Crest Hospital, Dickson City Hospital, Hazleton Hospital, Hecktown Oaks Hospital, Muhlenberg Hospital, Pocono Hospital, Redeemer Health, Roble Road Core Laboratory, Schuylkill Hospital
Alternate Names
  • Blue Top Platelet Count
  • Clumped Platelet
  • Platelet Clumping
Testing Schedule
Routine daily, STAT testing available