Protein S, Activity PROTES

Method(s) Clot Detection
Specimen Required
Collect

One adequately filled 3.0 mL light blue (sodium citrate) top tube.

Transport

**TIME SENSITIVE** For specimens that cannot be shipped to the laboratory to arrive within 4 hours of collection, see Collection and Processing of Coagulation Specimens information (link below).

Remarks

Draw blood into citrate (light blue) top tube filled to the proper level (1 part anticoagulant to 9 parts blood). Invert tube 3-4 times to avoid clotting.

Stability Ambient and Refrigerated Plasma: 4 hours; Frozen Plasma: 2 weeks.
Unacceptable Conditions

Specimens that are clotted, hemolyzed, collected in the wrong tube, less than 90% filled, exceed the stability limits or non-frozen plasma are unacceptable for testing.

Schedule Tue, Fri
Billing Code 4010048
CPTCode 85306
Notes Anticoagulant therapy can interfere with the test results.
Preferred Specimen Collection Device(s)
Reference Interval

53 - 166 %

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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