Collect in light blue top tubes (sodium citrate anticoagulant).
All special coagulation testing may be collected in the same tube, and (1) additonal tube must be added for every (2) additional tests ordered.
One FULL 1.8 mL OR 2.7 mL tube.
Note: For all coagulation testing, ensure tubes are sufficiently filled. Refer to the guide below.
After Plasma Separation (Must be separated within 4 hours)
Frozen (-20°C)
≤ 2 weeks
Frozen (-70°C)
≤ 6 months
Remarks
If the patient's Hematocrit is >55%, call the Coagulation lab at 41778 and ask for a light blue top tube with an adjusted amount of 3.2% trisodium citrate anticoagulant.
Volume Required
One completely filled 1.8 mL or 2.7 mL light blue top tube
Minimum Required
One completely filled 1.8 mL light blue top tube
Phlebotomy Draw
Yes
Performing Lab
Coagulation Laboratory
Performed
Monday - Friday
Methodology
Mechanical clot detection
Reported
1-3 days
LIS Mnemonic
THROM
Available STAT
No
Reflex Testing
N/A
Vendor
None
Reference Ranges
>6 months
18.7-25.5 sec
Values change rapidly in the neonatal period and are dependent on the gestational age at delivery.
CPT Codes
85670
Collection
Collect
Collect in light blue top tubes (sodium citrate anticoagulant).
All special coagulation testing may be collected in the same tube, and (1) additonal tube must be added for every (2) additional tests ordered.
One FULL 1.8 mL OR 2.7 mL tube.
Note: For all coagulation testing, ensure tubes are sufficiently filled. Refer to the guide below.
After Plasma Separation (Must be separated within 4 hours)
Frozen (-20°C)
≤ 2 weeks
Frozen (-70°C)
≤ 6 months
Remarks
If the patient's Hematocrit is >55%, call the Coagulation lab at 41778 and ask for a light blue top tube with an adjusted amount of 3.2% trisodium citrate anticoagulant.
Volume Required
One completely filled 1.8 mL or 2.7 mL light blue top tube
Minimum Required
One completely filled 1.8 mL light blue top tube
Phlebotomy Draw
Yes
Ordering
Performing Lab
Coagulation Laboratory
Performed
Monday - Friday
Methodology
Mechanical clot detection
Reported
1-3 days
LIS Mnemonic
THROM
Available STAT
No
Reflex Testing
N/A
Vendor
None
Result Interpretation
Reference Ranges
>6 months
18.7-25.5 sec
Values change rapidly in the neonatal period and are dependent on the gestational age at delivery.
