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Test ID: PSTF
Protein S Antigen, Plasma

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Secondary ID A test code used for billing and in test definitions created prior to November 2011

83049

Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

TOTAL

Males: 80-160%

Females

<50 years: 70-160%

> or =50 years: 80-160%

 

FREE

Males: 65-160%

Females

<50 years: 50-160%

> or =50 years: 65-160%

Normal, full-term newborn infants or healthy premature infants may have decreased levels of total protein S (15-50%); but because of low levels of C4bBP, free protein S may be normal or near the normal adult level (> or =50%). Total protein S reaches adult levels by 90 to 180 days postnatal.*

*See Pediatric Hemostasis References in Coagulation Studies in Special Instructions.



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