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Silica Clotting Time

eDH Procedure Code(s)

LAB3932 Bleeding Diathesis Screen
LAB2822 Coagulation Thrombosis Tests
LAB2119 Mixing Study —LAB ONLY
LAB2167 Antiphospholipid Panel —LAB ONLY
LAB2169 Thrombosis/Antiphospholipid Panel —LAB ONLY
LAB2165 Thrombosis/Antiphospholipid Screen —LAB ONLY
LAB2012 Silica Clotting Time —LAB ONLY

Order Questions

Procedure Question
LAB2119 Mixing Study
  • Indication for testing?
LAB2165 Thrombosis/Antiphospholipid Screen
  • Please Select desired testing (Select one)
  • Does the patient have a history of thrombosis?
  • Is there a FAMILY history of thrombosis (e.g. blood clots in first-degree relatives)?
  • Is Patient Pregnant?
  • Is Patient on Warfarin?
  • Is Patient on Direct Oral Anticoagulant (DOAC)?
  • Please provide reason for testing -
LAB3932 Bleeding Diathesis Screen
  • Relevant Patient History:
  • Relevant Family History:
  • Aspirin, NSAIDS, or Antiplatelet drugs?
  • Warfarin, Heparin, Other anticoagulant?
  • Is Platelet Function testing required?
LAB2822 Coagulation Thrombosis Tests
  • Thrombosis Testing Needed

Collection Information

1.8 mL Sodium Citrate tube filled to the line
OR
2.7 mL Sodium Citrate tube filled to the line
OR
DHMC Lebanon only: 1.0 mL Sodium Citrate microtainer filled to the line
Blue top tubes must be filled within 10% of stated volume. A discard tube must be used if a citrate tube is to be drawn using a winged blood collection set. It is important to remove air from the blood collection set to ensure the proper blood volume is obtained in the coag tube.
If the patient has a known hematocrit >55%, please contact the coagulation lab for an adjusted collection tube before drawing the blood.
DHMC Lebanon only: If needed, 1.0 mL sodium citrate tubes can be prepared by the laboratory. These are a non-vacuum orange screw cap tube with lab prepared anticoagulant. To obtain some of these custom tubes please call the coagulation laboratory at 5-9463.

Specimen Information

Specimen Type Specimen Source Acceptable Containers Minimum Test Volume (mL)
Blood Blood, Venous OrgCit-F 0.5
Blood Blood, Venous Adjusted-F 1.0
Blood Blood, Venous BluCit-F 1.0

Shipping and Handling

Processing Instructions: Double spin, separate, and freeze.

Transport Temperature: Frozen
Transport Instructions: N/A

Specimen Stability Unprocessed
Unprocessed: 4 hours


Specimen Stability Post Processing
Ambient: 4 hours
Refrigerate: N/A
Frozen: 2 weeks

Test Components

Component LOINC Code
SILICA CLOTTING TIME 66736-0

Turnaround Time (TAT)

8 Days

CPT Code(s)

85732

Performing Lab Section

Coagulation

Performing Lab(s)

Dartmouth Hitchcock Medical Center Laboratory (MHMH) 603-650-2200