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PROTEIN S, ACTIVITY

Test Number:
  • 0030114
Test Alias:
Preferred Specimen:
  • Plasma
Container Type:
  • 3.2% sodium citrate light blue
Alternative Specimen:
  • No alternative specimen type. 3.8% sodium citrate is NOT acceptable.
Volume:
  • Minimum 1 mL
Collection Instructions:
  • Vacutainer tubes must be filled to completion to ensure the proper 9:1 blood to anticoagulant ratio. Mix the sample by inverting the tube gently at least 4 times immediately after filling. Process the sample within 60 minutes. Spin down at a speed and time required to produce platelet-poor plasma; This can be accomplished by centrifuging at 1500 x g for 15 minutes. Transfer plasma to a PLASTIC tube using a PLASTIC pipette. DO NOT USE GLASS TUBES OR PIPETTES. Label each tube as plasma. Submit a plasma aliquot for each and every coag assay requested. Freeze specimen immediately in a -70C freezer or with liquid nitrogen or in a mixture of dry ice and methanol. Send specimen frozen on dry ice.
Transport Temperature:
  • FROZEN immediately at -20C or lower
Specimen Stability:
  • Room temp: Unacceptable
  • Refrigerated: Unacceptable
  • Frozen (-20 degrees): 30 days
  • Frozen (-70 degrees): 1 year
Methodology:
  • Clot Detection
CPT Code:
  • 85306
Reject Criteria:
Reference Range:
  • Male: 70-150 % normal, Female: 60-140 % normal
Report Available:
  • 7 days

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