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Test Code Plt Platelet Count

Clinical System Name

Platelet Count

Description

 A platelet count  is useful in monitoring and/or screening for various diseases, disorders and drug therapies that affect the number of platelets in the blood.  

 

 

 

Sample Requirements

Specimen: Whole Blood

Container(s):  Lavender/EDTA (Heparinized Syringe is for OR orders only.)

Preferred Vol:  1.0-3.0 mL

Minimum Vol:  0.5 mL microtainer; 1.0 mL macrotainer

 

Notes: A Lavender top/EDTA vacutainer must contain at least 1.0 mL.

Processing Instructions

Reject due to:  Insufficient Quantity, Wrong Sample Collection, Clotted Sample

Spin: N

Aliquot: N

Temp: RT

Storage location:  Deliver to Core Lab Hematology bench.

 

Off-site collection: Store whole blood at room teperature and transport to Children's Lab immediately.  Samples > 24 hours old may be rejected.

Stability

 

Specimen Type Temperature Time
 Whole blood RT

24 hrs

 Whole blood 2-8oC

 48 hrs

 Whole blood -20oC or -70oC

N/A

 

Availability

STAT Performed TAT
Y 24/7 1 H

 

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Core Hematology

Phone Number: 206-987-2561

 

 

Reference Range

 

Test

Sex

Age Range

Normal Range

Unit

Platelets

Both

0 - 3 Days

250 - 450

K/CMM

Platelets

Both

3 - 9 Days

200 - 400

K/CMM

Platelets

Both

9 Days - 1 Month

250 - 450

K/CMM

Platelets

Both

1 - 6 Months

300 - 750

K/CMM

Platelets

Both

6 Months - 2 Years

250 - 600

K/CMM

Platelets

Both

2 - 8 Years

250 - 550

K/CMM

Platelets

Both

8 - 12 Years

200 - 450

K/CMM

Platelets

Both

12 Years - Adult

150 - 450

K/CMM

 

 

Methodology

Method:  Sysmex XN-3000 & XN-1000: Fluorescent Flow Cytometry with Platelet Specific Dyes.

Analytical Volume:  0.025 mL  (no guarantee)

CPT Codes

85049

Critical Values

 

Platlets (PLT) < 30,000/CMM  or  >1,000,000/CMM

 

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