Partial Thromboplastin Time (PTT)
Order Name
PTT
Revision Date 06/28/2018
Revision Date 06/28/2018
| Test Name | Methodology | LOINC Code |
|---|---|---|
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Partial Thromboplastin Time (PTT)
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| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1.8 mL ( 1.8 mL) | Plasma | 3.2% Sodium Citrate tube | Room Temperature |
| Alternate 1 | mL ( mL) | |||
| Instructions | Draw a full, light blue-top (3.2% sodium citrate) tube. It is important that the collection tube is properly filled to the fill line indicated on the tube. Under-filled tubes will result in falsely prolonged values due to dilution of plasma with anticoagulant; and therefore cannot be processed. (Blood drawn from a heparin line is not acceptable.) Do Not Spin. Note: Label specimen with patient name (first and last) or other unique identifier, patient hospital identification number or last four digits of the Social Security number, date and time of draw, collector initials, and test(s) being ordered. |
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| Reference Range | An interpretive report will be provided. | |||
| GENERAL INFORMATION | |
|---|---|
| Testing Schedule | Monday through Sunday |
| Expected TAT | 2 Hours |
| Stat TAT | 1 Hour |
| Notes | Storage/Transport: Room Temp Stability: 4 Hours Room Temp |
| CPT Code(s) | 85730 |
| Lab Section | NRLS-Core Hematopathology |