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Test Code PTT Partial Thromboplastin Time

Important Note

Please call STAT courier! Must be to Coag lab within 4 hours of draw. Call Coag if you have any questions at 8-1730.

Clinical Indications

N/A

Additional Test Codes

Epic Order Code: PTT (APTT)
Sunquest Order Code: PTT
Px Order Code: LAB2457

Specimen Collection Type

Preferred: Blue (Sodium Citrate)

Minimum Collection Volume

2.7 ml

Reference Range

24.0-36.5 seconds

Critical Value

>130.0 secs

Interpretation

N/A

Rejection Criteria

Clotted or Underfilled Tube

Specimen Availability for Add-on Testing

4 hours

Specimen Stability

4 hours

Day(s) Performed

Monday through Sunday

Performing Lab- Department

TUKHS-BH – Hematology

CPT Code

85730

LOINC Code

14979-9

Test Alias

N/A

Additional Information / Notes

Test must be done within 4 hours of draw time.