Helena Hemostasis Assays
Prothrombin Time Assays
Thromboplastin Reagent
| Cat. No. | Item |
| 5380 | Thromboplastin Reagent, 200 tests, 10 x 4 mL |
| 5381 | Thromboplastin Reagent, 500 tests, 10 x 10 mL |
Thromboplastin Reagent is prepared from rabbit brain tissue for use in automated, semi-automated and manual PT tests and assays for Factors II, V, VII and X. Reagent is lyophilized; reconstitute with water. Reconstituted stability is 7 days at 2-8°C. International Sensitivity Index (ISI) values are between 2.0 and 2.5.
Thromboplastin-MI Reagent Kits (with Diluent)
| Cat. No. | Item |
| 5271 | Thromboplastin-MI Kit, 250 tests, 5 x 10 mL |
| 5272 | Thromboplastin-MI Kit, 500 tests, 10 x 10 mL |
| 5274 | Thromboplastin-MI Kit, 125 tests, 5 x 5 mL |
With a mid-range ISI assignment between 1.55 and 1.85, Thromboplastin-MI provides the sensitivity for INR monitoring of stabilized anticoagulated patients, early therapy, and detection of factor deficiencies. To eliminate pipetting errors and water problems, a convenient add-a-vial diluent is included with Thromboplastin-MI kits. After reconstitution, the original activity is stable for seven (7) days at 2 to 6°C, 24 hours at room temperature, or 8 hours at 37°C.
Thromboplastin-LI Reagent Kit
| Cat. No. | Item |
| 5248 | Thromboplastin-LI Kit, 250 tests, 10 x 5 mL |
| 5249 | Thromboplastin-LI Kit, 500 tests, 10 x 10 mL |
Thromboplastin-LI is a stable liquid, ready for use. With a low ISI assignment less than 1.50, this reagent offers reliable sensitivity to liver disease, depression of Vitamin K dependent factors, and coumarin-induced coagulation, even in the presence of high-dose heparin therapy. Open reagent is stable 14 days at 2-8°C.
aPTT Assays
aPPT-SA Reagent with Soluble Ellagic Acid Activator
| Cat. No. | Item |
| 5388 | aPTT-SA Reagent Kit, 250 tests |
| Ellagic Acid Activated Reagent, 5 x 5 mL | |
| 0.025 M Calcium Chloride, 5 x 5 mL | |
| 5389 | aPTT-SA Reagent Kit, 500 tests |
| Ellagic Acid Activated Reagent, 5 x 10 mL | |
| 0.025 M Calcium Chloride, 5 x 10 mL | |
| 5387 | aPTT-SA Reagent, 1000 tests, 10 x 10 mL |
| 5386 | 0.025 M Calcium Chloride, 1000 tests, 10 x 10 mL |
Factor Deficient Substrates / Owren's Veronal Buffer
Congenital Factor Deficient Substrate Plasmas
| Cat. No. | Item |
| 5190 | Factor II Deficient Substrate, 10 x 1 mL |
| 5191 | Factor V Deficient Substrate, 10 x 1 mL |
| 5192 | Factor VII Deficient Substrate, 10 x 1 mL |
| 5193 | Factor VIII Deficient Substrate, 10 x 1 mL |
| 5194 | Factor IX Deficient Substrate, 10 x 1 mL |
| 5195 | Factor X Deficient Substrate, 10 x 1 mL |
| 5196 | Factor XI Deficient Substrate, 10 x 1 mL |
| 5197 | Factor XII Deficient Substrate, 10 x 1 mL |
For use in Factor Assays, these plasmas are obtained from human congenitally deficient donors (Factor II includes bovine plasma) and have less than 1% residual factor activity.
Congenital Factor Deficient Substrate Plasmas
| Cat. No. | Item |
| 5375 | Owren's Veronel Buffer, 10 x 25 mL |
Owren's Veronal Buffer is used as a diluent in preparing patient sample dilutions for Factor Assays and Fibrinogen Assays.
Fibrinogen and Thrombin Time Assays
Fibrinogen Assay Kit
| Cat. No. | Item |
| 5376 | Fibrinogen Assay Kit, 100 tests |
| Thrombin Reagent, 5 x 2 mL | |
| Fibrinogen Calibrator, 2 x 1 mL | |
| Owren's Veronal Buffer, 2 x 25 mL | |
| Fibrinogen Assay Graph Paper, 1 sheet | |
| 5374 | Thrombin Reagent, 200 tests, 10 x 2 mL |
| 5379 | Fibrinogen Calibrator, 10 x 1 mL |
The Fibrinogen Assay kit is for automated, semi-automated and manual quantitation of fibrinogen in plasma. The kit uses a relatively high working concentration of thrombin (100 NIH units/mL) and low fibrinogen concentration to minimize effects of heparin and FDPs. Reagents and calibrator are also available as individual items.
Helena Thrombin Clotting Time (TCT) Reagent
| Cat. No. | Item |
| 5377 | Thrombin Time Reagent, 250 tests, 10 x 5 mL |
Helena's TCT assay uses a low concentration of thrombin (3 NIH units/mL) with undiluted plasma. It is sensitive to fibrinogen levels below 70 mg/dL. The reagent is ideal for automated, semi-automated and manual instruments.
