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Platelet count

Platelet Count CPT: 85049

Synonyms

Platelets

Thrombocyte Count

Expected Turnaround Time

Within 1 day

Specimen Requirements

Specimen

Whole blood. Peripheral blood smears prepared at the time of collection may also be useful, particularly when platelet aggregation is a problem.

Volume

Tube fill capacity

Minimum Volume

0.5 mL (500 μL for pediatric microtainer capillary tubes; fill tube to capacity.)

Container

Lavender-top (EDTA) tube.

Collection

Invert tube 8 to 10 times immediately after tube is filled at the time of collection.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature Period
Room Temperature 1 day
Refrigerated 3 days
Frozen Unstable
Freeze/thaw/ cycles Unstable

Patient Information

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).

Due to high demand we are unable to see walk-in patients for COVID-19 Testing. If you want to get tested please schedule your appointment.