Sign in →

Test Code PTT Activated Partial Thromboplastin (Test Code – PTT)

Specimen Type:

Light Blue (Sodium Citrate – 3.2%) – Plasma Only

Specimen Volume and Collection Instructions:

When using a butterfly draw a red top tube or waste tube and discard, then proceed to draw a light blue top tube.

 

Collection Tube MUST be filled completely.  Gently invert the tube 3 to 4 times immediately after collection to ensure proper mixing of blood and anticoagulant.

Special Handling Instructions:

Inpatients:  Deliver to Laboratory within 4 hours of collection.  Specimens greater than 4 hours will be rejected due to specimen stability.

Outpatients:   Un-centrifuged or centrifuged with plasma remaining on top of the cells are stable for 4 hours from time of collection at room temperature.

If unable to deliver to the laboratory within 4 hours of collection:

Centrifuge the light blue top tube

Transfer plasma to an appropriately labeled plastic vial

Centrifuge plasma in the plastic vial a second time to remove the platelets

Transfer sample to another appropriately labeled plastic vial

Label vial PLASMA

Freeze immediately

 

Stat Turn-around Time:

1 hour from specimen arrival in the laboratory

Routine Turn-around Time:

Inpatients: 4 hours

Outpatients: 24 hours from specimen arrival in the laboratory

Reference Range:

Some Reference Ranges are age and/or gender dependent.  Please see report for complete details

Performing Laboratory

CPH – Canton Potsdam Hospital

CSH – Clifton Springs Hospital

Elmgrove – Outpatient Laboratory

GH – Gouverneur Hospital

MH – Massena Hospital

NWCH – Newark Wayne Community Hospital

RGH – Rochester General Hospital

UMMC – United Medical Memorial Hospital

UH – Unity Hospital

CPT Code:

85730

LOINC Code:

14979-9