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2710: vW Protease Activity |
Synonym:
ADAM-TS13
Methodology:
fluorescence resonance energy transfer
Schedule:
1-2 times/week
Reported:
10-13 days
Laboratory:
Hematology
Performed externally at:
Quest.
SPECIMEN REQUIREMENTS
Collection Requirements:
Preferred container is ONE 4.5-mL blue top tube; TWO pediatric 2.7-mL blue top tubes are also acceptable. Tubes must be filled completely.
Unacceptable Conditions:
Partially filled tube or clotted sample.
Reference Range Comment:
Normal
Clinical Indication Criteria:
TTP.
Additional Notes:
Reflex to vW protease inhibitor if protease activity is less than 251 ng/mL.
CPT Code:
85247
Manual Release Date:
10/16/2009
Format Date:
11/02/2009