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PTT

Specimen Type:

 

also known as APTT , Activated Partial Thromboplastin Time

Blood


HEMATOLOGY


Specimen requirements:

Blue Top

Reference ranges:

CATEGORY

LOW  

HIGH  

UNITS  

QUALITATIVE  

N/A

25.0

34.0

seconds

N/A

Critical values:

CATEGORY

LOW  

HIGH  

UNITS  

QUALITATIVE  

N/A

N/A

>70

seconds

N/A

Unit of measure:

Seconds

Ideal sample:

2.7 mL Whole Blood, blue top tube

Absolute minimum amount:

2.4 mL Whole Blood, blue top tube

Method of collection:

N/A

Transportation:

N/A

Label instructions:

N/A

The following substances can adversely affect the results:

Hemolysis, Lipemia, Chylous, Heparin, Clots in Specimen, Icteric, Improper Line Draw, Hematocrit >56

Request test on form:

MULTI LABS [Chem/Hem/UA/Tox/BB/Rheum] ( 151-104 )

Order/entry screen(s):

Hematology/Coagulation

 

Common Lab Procedures

Stat frequency:

Daily

Stat turn around time:

1 hour

Routine frequency:

Daily

Must be in by:

N/A

Routine turn around time:

4 Hours

For Hillcrest deliver to:

SCRAP : Specimen Central Receiving and

 

Processing, room 2-117

For Thornton deliver to:

Hematology : Processing Desk, 1st floor,

 

Hospital, room 1-013

Scheduling requirements :

N/A

Method:

Optical Clot Detection

Special Instructions:

Specimens must be received in the laboratory within four hours of collection time. Patients with hematocrits in excess of 56% will need to have special tubes for collection.

 

Results are available on a Chart Copy

 

Results are Quantitative

CyberLAB abbreviation:

PTT

CyberLAB code:

7312

Lab Processing Instructions:

N/A