Platelet Count CPT: 85049
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Whole blood. Peripheral blood smears prepared at the time of collection may also be useful, particularly when platelet aggregation is a problem.
Tube fill capacity
0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity.)
Lavender-top (EDTA) tube.
Invert tube 8 to 10 times immediately after tube is filled at the time of collection.
Maintain specimen at room temperature.
To determine the number of platelets in a sample of your blood as part of a health exam; to screen for, diagnose, or monitor conditions that affect the number of platelets, such as a bleeding disorder, a bone marrow disease, or other underlying condition.
As part of a routine complete blood count (CBC); when you have episodes of unexplained or prolonged bleeding or other symptoms that may be due to a platelet disorder.
A blood sample drawn from a vein in your arm or by a fingerstick (children and adults) or heelstick (newborns).