Tinzaparin

Alternative Names/Synonyms	LMWH, Anti XA, Low Molecular Weight Heparin
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Hematology
Specimen Type	Blood
Test Code	TINZA

Ordering Instructions, Requisition

MSH Coagulation requisition form (MS 520)

Clinical Significance (If applicable)

This chromogenic assay is performed for the quantitative determination of the Low Molecular Weight Heparin (LMWH) level.

Specimen Requirements (Sample Type)

Plasma (3.2% Na Citrate)

Specimen Requirements (Volume (mL))

Full draw

Specimen Requirements (Tube Type)

Light Blue citrate tube
Collection Containers – Tube Types

Collection Requirements

The 9:1 blood/citrate ratio must be kept constant. Adjustments for the amount of anticoagulant should be made when the hematocrit is abnormal (above 55%). Mix immediately to prevent clotting.
Collection Instructions

Storage / Shipment Details

Send whole blood sample(s) at room temperature as soon as possible.
If specimens cannot be shipped immediately, centrifuge and separate plasma within 1 hour of collection, send frozen plasma on dry ice

Sample Stability

Fridge: N/A

Centrifuge and separate plasma within 1 hour of collection.

Room Temperature: 4 hours

Freezer: - 20 °C 15 days - 70 °C 6 months

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Automated Coagulation Analyzer

Test Availability

24 hours, 7 days/week.

STAT Turnaround Time

2 hours

Routine Turnaround Time

4 hours

Reference Ranges

Suggested LMWH Therapeutic Ranges:
1.0-2.0 IU/mL once daily dosage
0.6-1.0 IU/mL twice daily dosage In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 Extension 4688

Special Instructions

Must indicate anticoagulant status