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Test Code LAB4164 PLATELET FUNCTION TEST

Specimen Type

Whole blood Lavender top tube and 2 Blue Sodium Citrate tubes

Specimen Volume

Blue Top: 
Two 3mL Blue top (3.2% Sodium Citrate), or
Two 5mL Blue top (3.2% Sodium Citrate)

Lavender:
4 mL Whole Blood

 

Minimum Volume

Blue Top: 
Two 3mL Blue top (3.2% Sodium Citrate), or
Two 5mL Blue top (3.2% Sodium Citrate)

Lavender:
0.5 mL Whole Blood

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Blue Top: 
Whole blood: 4 hours at 20-25⁰ C

Lavender:  
Refrigerated:  2 days
Room Temp:  1 day

Method

Platelet Aggegation

Reference Ranges

0 up to 3 Years:
Abnormality - Abnormal    <61 or >108 seconds
Reference Range    61-108 seconds

3 Years up to 150 Years:
Abnormality - Abnormal    <81 or >199 seconds
Reference Range    81-199 seconds

Reporting Limit

0 up to 3 Years:
0-300 seconds

3 Years up to 150 Years:
0-300 seconds

Synonyms

PFT

CPT Codes

85576

Specimen Processing

Specimens must be walked to the lab

Deliver all specimens to coagulation.  Do not centrifuge

Collection Instructions

Walk tubes to lab. Do not use pneumatic tube system