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Protein S Activity Profile with Lupus and APC Resistance

Icon & Photos

Blue Top (Citrate Tube)

Specimen Requirements

Preferred:
Container/Tube: Blue Top (Citrate Tube)
Minimum Volume: 1 mL Blood
Collection Instructions: Spin immediately.
 

Specimen Stability

Analyze within 1 Hour: Use Primary Tube

Analyze within 4 Hours:
Spin immediately. Remove the top 2/3 plasma within 1 hour and spin again. Remove the top 2/3 of the plasma from this sample for testing.

Analyze > 4 Hours: Remove the top 2/3 plasma within 1 hour and spin again. Remove the top 2/3 of this sample and freeze at -70 degrees

Reference Range

Male: 75-130%

Female: 60-120%

Methodology

Fixed absorbance: Clotting Assay

Lab Handling

Analyze within 1 Hour: Use Primary Tube

Analyze within 4 Hours:
Spin immediately. Remove the top 2/3 plasma within 1 hour and spin again. Remove the top 2/3 of the plasma from
this sample for testing.

Analyze > 4 Hours: Remove the top 2/3 plasma within 1 hour and spin again. Remove the top 2/3 of this sample and freeze at -70 degrees

Day(s) Performed

Tuesday and Thursday

Report Available

1-5 days