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HemosIL Chromogenic Factor IX is an automated assay for the photometric, quantitative determination of factor IX activity in 3.2% citrated plasma on the ACL TOP® Family and ACL TOP Family 50 Series in the laboratory setting by a healthcare professional. HemosIL Chromogenic Factor IX is indicated for use on patients when identifying factor IX deficiency or measuring factor IX activity from patients on replacement therapy. For adult population only. For prescription use only.

Factor IX activity in a patient's plasma is determined using a chromogenic method, in which human factor IX is activated by human factor XIa, and, when formed, factor IXa activates human factor X in the presence of human factor VIII, calcium and phospholipid. The amount of factor Xa generated is proportionate to the factor IX activity and is determined from the hydrolysis of a chromogenic factor Xa substrate. Results are determined by comparing a chromogenic signal to a calibration curve.

ACL TOP 970 CL: The ACL TOP 970 CL is a bench top, fully automated, random access analyzer designed specifically for in vitro diagnostic use by health care professionals in a clinical laboratory. The system provides results for both direct measurements and calculated parameters. HemosIL CL Anti-Cardiolipin IgM: HemosIL CL Anti-Cardiolipin IgM is a fully automated chemiluminescent immunoassay for the semi-quantitative measurement of anti-cardiolipin (aCL) IgM antibodies in human 3.2% or 3.8% citrated plasma on the ACL TOP 970 CL in the laboratory setting by a healthcare professional, as an aid in the diagnosis of Antiphospholipid Syndrome (APS) when used in conjunction with other laboratory and clinical findings. For use with adult population. For prescription use only. HemosIL CL Anti-ß2 Glycoprotein-I IgM: HemosIL CL Anti-B2 Glycoprotein-I IgM is a fully automated chemiluminescent immunoassay for the semi-quantitative measurement of anti-B2 Glycoprotein-I (anti-B2GPI) IgM antibodies in human 3.2% or 3.8% citrated plasma on the ACL TOP 970 CL in the laboratory setting by a healthcare professional, as an aid in the diagnosis of Antiphospholipid Syndrome (APS) when used in conjunction with other laboratory and clinical findings. For use with adult population. For prescription use only.

ACL TOP 970 CL Instrument: The ACL TOP 970 CL is an instrument that integrates new chemiluminescent test capability similar to the ACL AcuStar, K083518. HemosIL CL Anti-Cardiolipin IgM: HemosIL CL Anti-Cardiolipin IgM is a chemiluminescent two-step immunoassay consisting of magnetic particles coated with cardiolipin and human purified ß2GPI, which capture, if present, the aCL antibodies from the sample. After incubation, magnetic separation, and a wash step, a tracer consisting of an isoluminol-labeled anti-human IgM antibody is added and may bind with the captured aCL IgM on the particles. After a second incubation, magnetic separation, and wash step, reagents that trigger the luminescent reaction are added, and the emitted light is measured as relative light units (RLU) by the ACL TOP 970 CL optical system. RLUs are directly proportional to the aCL IgM concentration in the sample. HemosIL CL Anti-ß2 Glycoprotein-I IgM: HemosIL CL Anti-ß2 Glycoprotein-I IgM is a chemiluminescent two-step immunoassay consisting of magnetic particles coated with human purified ß2GPI, which capture, if present, the aß2GPI antibodies from the sample. After incubation, magnetic separation, and a wash step, a tracer consisting of an isoluminol-labeled anti-human IgM antibody is added and may bind with the captured aß2GPI IgM on the particles. After a second incubation, magnetic separation, and wash step, reagents that trigger the luminescent reaction are added, and the emitted light is measured as relative light units (RLUs) by the ACL TOP 970 CL optical system. RLUs are directly proportional to the aß2GPI IgM concentration in the sample.

The GEM Premier 7000 with iQM3 is a portable critical care system for use by health care professionals to rapidly analyze lithium heparinized whole blood samples at the point of health care delivery in a clinical setting and in a central laboratory. The instrument provides quantitative measurements of pH, pCO2, sodium, potassium, chloride, ionized calcium, glucose, lactate, hematocrit, total bilirubin, and CO-Oximetry (tHb, O2Hb, MetHb, HHb, sO2*) parameters from arterial, venous, or capillary lithium heparinized whole blood. These parameters, along with derived parameters, aid in the diagnosis of a patient's acid/base status, electrolyte and metabolite balance and oxygen delivery capacity. *s02 = ratio between the concentration of oxyhemoglobin and oxyhemoglobin plus deoxyhemoglobin. - · pH, pCO2, and pO2 measurements in whole blood are used in the diagnosis and treatment of life-threatening acid- base disturbances. - · Electrolytes in the human body have multiple roles. Nearly all metabolic processes depend on or vary with electrolytes: - Sodium (Na+) measurements are used in the diagnosis and treatment of aldosteronism, diabetes insividus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic secretion, or other diseases involving electrolyte imbalance. - Potassium (K+) measurements are used to monitor electrolyte balance in the diagnosis and treatment - of disease conditions characterized by low or high blood potassium levels. - Ionized calcium (Ca++) measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease, and tetany. - Chloride (Cl-) measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders, such as cystic fibrosis and diabetic acidosis. - · Hematocrit (Hct) measurements in whole blood of the packed red cell volume of a blood sample are used to distinguish normal from abnormal states, such as anemia and erythrocytosis (an increase in the number of red cells). - · Glucose (Glu) measurement is used in the diagnosis, monitoring and treatment of carbohydrate metabolism - disturbances including diabetes mellitus, neonatal hypoglycemia, idiopathic hypoglycemia, and pancreatic islet cell carcinoma. - · Lactate (Lac) measurement is used: - to evaluate the acid-base status of patients suspected of having lactic acidosis; - to monitor tissue hypoxia and strenuous physical exertion; - in the diagnosis of hyperlactatemia. - · Total Bilirubin (tBili) measurement is used to aid in assessing the risk of kernicterus and hyperbilirubinemia in neonates. • CO-Oximetry (tHb, COHb, MetHb, O2Hb, HHb, and sO2) evaluates the ability of the blood to carry oxygen by measuring total hemoglobin and determining the percentage of functional and dysfunctional hemoglobin species. – Total Hemoglobin (tHb): Total hemoglobin measurements are used to measure the hemoglobin content of whole blood for the detection of anemia. - COHo: Carboxyhemoglobin measurements are used to determine the carboxyhemoglobin content of human blood as an aid in the diagnosis of carbon monoxide poisoning. - MetHb: Methemoglobin measurements are used to determine different conditions of methemoglobinemia. - HHb: Deoxyhemoglobin, as a fraction of total hemoglobin, is used in combination with oxyhemoglobin to measure oxygen status. - O2Hb: Oxyhemoglobin, as a fraction of total hemoglobin, is used in combination with deoxyhemoglobin to measure oxygen status. - sO2: Oxygen saturation, more specifically the ratio between the concentration of oxyhemoglobin and oxyhemoglobin plus deoxyhemoglobin, is used to measure oxygen status.

The GEM Premier 7000 with iQMs system provides health care professionals with quantitative measurements of lithium heparinized whole blood pH, pCO2, pO2, Na*, K*, Ch, Ca**, glucose, lactate, Hct, total bilirubin and CO-Oximetry (tHb, O2Hb, COHb, MetHb, HHb, sO₂*) from arterial, venous or capillary samples at the point of health care delivery in a clinical setting and in a central laboratory. *sO₂ = Ratio between the concentration of oxyhemoglobin plus deoxyhemoglobin plus deoxyhemoglobin. Key Components: Instrument: It employs a unique touch-sensitive color screen and a simple set of menus and buttons for user interaction. The analyzer guides operators through the sampling process with simple, clear messages and prompts. PAK (Cartridge): All required components for sample analysis are contained in the GEM PAK, including sensors, optical cell for CO-Oximetry and total bilirubin, sampler, pump tubing, distribution valve, waste container and Process Control Solutions. The GEM PAK is an entirely closed analytical system. The operator cannot introduce changes to the analytical process before or during the GEM PAK's use-life on board the instrument. The GEM PAK has flexible menus and test volume options to assist facilities in maximizing efficiency. The EEPROM on the GEM PAK includes all solution values and controls the analyte menu and number of tests. The setup of the instrument consists of inserting the GEM PAK into the instrument. The instrument will perform an automated GEM PAK start-up during which the following is performed: warm-up (15 minutes), sensor conditioning (10 minutes), Process Control Solution (PCS) performance (15 minutes), all of which take about 40 minutes. After GEM PAK start-up, Auto PAK Validation (APV) process is automatically completed: two completely independent solutions traceable to NIST standards, CLSI procedures or internal standards, containing two levels of concentration for each analyte (PC Solution D and E), are run by the analyzer to validate the integrity of the PC Solutions and the overall performance of the analytical system. Note: GEM PAKs that include tBili analyte will require the successful performance of CVP 5 tBili. Includes all necessary components for hemolysis detection, such as an acoustofluidic flow cell, an LED light source and an optical detector, for appropriate flagging of potassium measurements in whole blood samples without additional sample volume or sample processing steps. Intelligent Quality Management (iQM3): iQM3 is used as the quality control and assessment system for the GEM Premier 7000 system. iQM3 is an active quality process control program designed to provide continuous monitoring of the analytical process before, during and after sample measurement with real-time, automatic error detection, automatic correction of the system and automatic documentation of all corrective actions, replacing the use of traditional external QC. iQM3 introduces hemolysis detection in whole blood samples, enhancing quality assessment in the pre-analytical phase of testing.

HemosIL Liquid Anti-Xa is an automated chromogenic assay for in vitro diagnostic use by laboratory professionals in clinical laboratories. The assay provides quantitative results on 3.2% citrated human plasma for the following analytes based on the calibrators used: · When used with HemosIL Heparin Calibrators: Quantitative determination of unfractionated heparin (UFH) and low molecular weight heparin (LMWH) activity on the ACL TOP Family and ACL TOP Family 50 Series. · When used with HemosIL Apixaban Calibrators: Quantitative determination of apixaban on the ACL TOP Family 50 Series through measurement of factor Xa activity, which is inversely proportional to the apixaban level. With HemosIL Apixaban Calibrators, the assay is intended to measure apixaban concentrations in patients on apixaban therapy in the following situations where measurement of apixaban levels could be useful to have as additional information: - Patients at risk for major bleeding - Patients experiencing a bleeding episode · When used with HemosIL Rivaroxaban Calibrators: Quantitative determination of rivaroxaban on the ACL TOP Family and ACL TOP Family 50 Series through measurement of factor Xa activity, which is inversely proportional to the rivaroxaban level. With HemosL Rivaroxaban Calibrators, the assay is intended to measure rivaroxaban concentrations in patients on rivaroxaban therapy in the following situations where measurement of rivaroxaban levels could be useful to have as additional information: - Patients at risk for major bleeding - Patients experiencing a bleeding episode The assay is not a stand-alone test and the results should be used in conjunction with other clinical and laboratory findings. For use in adult population. For prescription use only.

HemosIL Liquid Anti-Xa is a one stage chromogenic assay based on a synthetic chromogenic substrate and on Factor Xa inactivation. The assay provides quantitative rivaroxaban results on 3.2% citrated human plasma as follows: Rivaroxaban levels in patient plasma are measured automatically on ACL TOP Family and ACL TOP Family 50 Series when this assay is calibrated with HemosIL Rivaroxaban Calibrators. Rivaroxaban directly inhibits Factor Xa activity independent of the antithrombin present. The Factor Xa activity measured by the assay is exogenous. Factor Xa is neutralized directly by rivaroxaban. Residual Factor Xa is quantified with a synthetic chromogenic substrate. The paranitroaniline released is monitored kinetically at 405 nm and is inversely proportional to the rivaroxaban level in the sample. HemosIL Liquid Anti-Xa is an automated chromogenic assay for in vitro diagnostic use by laboratory professionals in clinical laboratories. The assay provides quantitative results on 3.2% citrated human plasma for the following analytes based on the calibrators used: When used with HemosIL Heparin Calibrators: • Quantitative determination of unfractionated heparin (UFH) and low molecular weight heparin (LMWH) activity on the ACL TOP Family and ACL TOP Family 50 Series. When used with HemosIL Apixaban Calibrators: • Quantitative determination of apixaban on the ACL TOP Family and ACL TOP Family 50 Series through measurement of factor Xa activity, which is inversely proportional to the apixaban level. With HemosIL Apixaban Calibrators, the assay is intended to measure apixaban concentrations in patients on apixaban therapy in the following situations where measurement of apixaban levels could be useful to have as additional information: - Patients at risk for major bleeding - Patients experiencing a bleeding episode When used with HemosIL Rivaroxaban Calibrators: • Quantitative determination of rivaroxaban on the ACL TOP Family and ACL TOP Family 50 Series through measurement of factor Xa activity, which is inversely proportional to the rivaroxaban level. With HemosIL Rivaroxaban Calibrators, the assay is intended to measure rivaroxaban concentrations in patients on rivaroxaban therapy in the following situations where measurement of rivaroxaban levels could be useful to have as additional information: - Patients at risk for major bleeding - Patients experiencing a bleeding episode The assay is not a stand-alone test and the results should be used in conjunction with other clinical and laboratory findings. For use in adult population. For prescription use only.

The ACL TOP Family 70 Series (ACL TOP 370, ACL TOP 570 and ACL TOP 770 / 770s / 770 LAS) are bench top, fully automated, random access analyzers designed specifically for in vitro diagnostic clinical use by health care professionals in the hemostasis laboratory for coagulation and/or fibrinolysis testing in the assessment of thrombosis and/or hemostasis. The systems provide results for both direct hemostasis measurements and calculated parameters.

The ACL TOP Family 70 Series are fully automated coagulation analyzers that utilize the same intuitive software, the same consumables, reagents, calibrators and controls, and provide the same analytical methodology for routine and specialty assay result reporting as the predicate ACL TOP Family 50 Series. The ACL TOP Family 70 Series instrument performs the following types of tests, using the same optical measuring wavelengths and test parameters as the predicate ACL TOP Family 50 Series: - . Coagulometric (Turbidimetric) Measurements - Chromogenic (Absorbance) Measurements . - . Immunological Measurements The ACL TOP Family 70 Series also offers the same pre-analytical features available on the ACL TOP Family 50 Series. These features alert the instrument operator to a potential HIL (Hemoglobin, Icteric and Lipemia) interference situation specific to the assays requested for a sample, underfilled sample tubes or a detected clog.

The GEM Premier ChemSTAT is a portable critical care system for use by health care professionals to rapidly analyze lithium heparinized whole blood samples at the point of health care delivery in a clinical setting and in a central laboratory. The instrument provides quantitative measurements of sodium (Na+), Potassium (K+), Ionized Calcium (Ca++), Chloride (Cl-), Glucose (Glu), Lactate (Lac), Hematocrit (Hct), Creatinine (Crea), Blood Urea Nitrogen (BUN), Total Carbon Dioxide (tCO2), pH, and partial pressure of carbon dioxide (pCO2) from arterial and venous heparinized whole blood. These parameters, along with derived parameters, aid in the diagnosis of a patient's acid/base status, electrolyte and metabolite balance. Electrolytes in the human body have multiple roles. Nearly all metabolic processes depend on or vary with electrolytes: · Sodium (Na+) measurements are used in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic secretion, or other diseases involving electrolyte imbalance. · Potassium (K+) measurements are used to monitor electrolyte balance in the diagnosis and treatment of disease conditions characterized by low or high blood potassium levels. · Ionized calcium (Ca++) measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany. · Chloride (Cl-) measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders, such as cystic fibrosis and diabetic acidosis. · Glucose (Glu) measurement is used in the diagnosis, monitoring and treatment of carbohydrate metabolism disturbances including diabetes mellitus, neonatal hypoglycemia, idiopathic hypoglycemia, and of pancreatic islet cell carcinoma. · Lactate (Lac) measurement is used to evaluate the acid-base status of patients suspected of having lactic acidosis, to monitor tissue hypoxia and strenuous physical exertion, and in the diagnosis of hyperlactatemia. · Hematocrit (Hct) measurements in whole blood of the packed red cell volume of a blood sample are used to distinguish normal from abnormal states, such as anemia and erythrocytosis (an increase in the number of red cells). · Creatinine (Crea) measurements are used in the diagnosis and treatment of renal diseases and in monitoring renal dialysis. · Blood Urea Nitrogen (BUN) or urea measurements are used for the diagnosis, monitoring, and treatment of certain renal and metabolic diseases. · Total carbon dioxide/tCO2 (also referred to as bicarbonate/HCO3-) is used in the diagnosis, monitoring, and treatment of numerous potentially serious disorders associated with changes in body acid-base balance. · pH and pCO2 measurements in whole blood are used in the diagnosis and treatment of life-threatening acid-base disturbances.

The GEM Premier ChemSTAT system provides fast, accurate, quantitative measurements of Sodium (Na"), Potassium (K*), Ionized Calcium (Ca*), Chloride (Cl·), Glucose (Glu), Lactate (Lac), Hematocrit (Hct), Creatinine (Crea), Blood Urea Nitrogen (BUN), Total Carbon Dioxide (tCO2), pH, and partial pressure of carbon dioxide (pCO2) from arterial and venous lithium heparinized whole blood.

Automated latex enhanced immunoassay for the quantitative determination of von Willebrand Factor Antigen (VWF:Ag) in human citrated plasma on IL Coagulation Systems.

The VWF:Ag kit is a latex particle enhanced immunoturbidimetric assay to quantify VWF:Ag in plasma. When a plasma containing VWF:Ag is mixed with the Latex Reagent and the Reaction Buffer included in the kit, the coated latex particles agglutinate. The degree of agglutination is directly proportional to the concentration of VWF:Ag in the sample and is determined by measuring the decrease of transmitted light caused by the aggregates.

HemosIL Liquid Anti-Xa is an automated chromogenic assay for in vitro diagnostic use by laboratory professionals in clinical laboratories. The assay provides quantitative results on 3.2% citrated human plasma for the following analytes based on the calibrators used: - · When used with HemosIL Heparin Calibrators: Quantitative determination of unfractionated heparin (UFH) and low molecular weight heparin (LMWH) activity on the ACL TOP Family and ACL TOP Family 50 Series. - · When used with HemosIL Apixaban Calibrators: Quantitative determination of apixaban on the ACL TOP Family 50 Series through measurement of Factor Xa activity, which is inversely proportional to the apixaban level. With HemosIL Apixaban Calibrators, the assay is intended to measure apixaban concentrations in patients on apixaban therapy in the following situations where measurement of apixaban levels could be useful to have as additional information: - Patients at risk for major bleeding - Patients experiencing a bleeding episode The assay is not a stand-alone test and the results should be used in conjunction with other clinical and laboratory findings. For use in adult population. For prescription use only.

HemosIL Liquid Anti-Xa is a one stage chromogenic assay based on a synthetic chromogenic substrate and on Factor Xa inactivation. The assay provides quantitative results on 3.2% citrated human plasma for the following analytes based on the calibrators used: . When used with HemosIL Heparin Calibrators: Heparin levels in patient plasma are measured automatically on ACL TOP Family and ACL TOP Family 50 Series when this assay is calibrated with HemosIL Heparin Calibrators. Heparin is analyzed as a complex with antithrombin present in the sample. The concentration of this complex is dependent on the availability of the patient's endogenous antithrombin. When the heparinantithrombin complex is formed, two competing reactions take place. - 1. Factor Xa is neutralized by heparin-antithrombin complex. - 2. Residual Factor Xa is quantified with a synthetic chromogenic substrate. The paranitroaniline released is monitored kinetically at 405 nm and is inversely proportional to the heparin level in the sample. In order to reduce the influence from heparin antagonists, such as platelet factor 4 (PF4), dextran sulfate is included in the reaction mixture. When used with HemosIL Apixaban Calibrators: . Apixaban levels in patient plasma are measured automatically on ACL TOP Family and ACL TOP Family 50 Series when this assay is calibrated with HemosIL Apixaban Calibrators. Apixaban directly inhibits Factor Xa activity independent of the antithrombin present. The Factor Xa activity measured by the assay is exogenous. Factor Xa is neutralized directly by apixaban. Residual Factor Xa is quantified with a synthetic chromogenic substrate. The paranitroaniline released is monitored kinetically at 405 nm and is inversely proportional to the apixaban level in the sample. Measurement of apixaban concentration is recommended by the International Society of Thrombosis and Hemostasis Subcommittee on Control of Anticoagulation in certain clinical scenarios including bleeding episodes, perioperative management, and suspicion of overdose.

HemosIL ReadiPlasTin is an in vitro diagnostic thromboplastin reagent, based on recombinant human tissue factor, for the quantitative determination, in human citrated plasma, of Prothrombin Time (PT) and Fibrinogen, on the ACL TOP Family and ACL TOP Family 50 Series of analyzers. The product is intended to be used for the extrinsic coagulation pathway and the monitoring of Oral Vitamin K Antagonist Therapy.

The thromboplastin reagent included in the ReadiPlasTin kit, after mixing with the ReadiPlasTin Diluent, is a liposomal preparation that contains recombinant human tissue factor (RTF), re-lipidated in a synthetic phospholipid blend. In the PT test, the addition of the tissue thromboplastin (ReadiPlasTin reagent) to the patient plasma in the presence of calcium ions initiates the activation of the extrinsic pathway. This results ultimately in the conversion of fibrin, with formation of a solid gel. The fibrinogen is quantitated (PT-based method) by relating the absorbance or light-scatter during clotting to a calibrator.

The GEM Premier 5000 is a portable critical care system for use by health care professionals to rapidly analyze heparinized whole blood samples at the point of health care delivery in a clinical setting and in a central laboratory. The instrument provides quantitative measurements of pH, pCO2, pO2, sodium, chloride, ionized calcium, glucose, lactate, hematocrit, total bilirubin and CO-Oximetry (tHb, O2Hb, COHb, MHb, sO2*) parameters from arterial, venous or capillary heparinized whole blood. These parameters, along with derived parameters, aid in the diagnosis of a patient's acid/base status, electrolyte and metabolite balance and oxygen delivery capacity. *sO2 = ratio between the concentration of oxyhemoglobin plus deoxyhemoglobin plus deoxyhemoglobin. · pH, pCO2, and pO2 measurements in whole blood are used in the diagnosis and treatment of life-threatening acid-base disturbances. · Electrolytes in the human body have multiple roles. Nearly all metabolic processes depend on or vary with electrolytes: · Sodium (Na+) measurements are used in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic secretion, or other diseases involving electrolyte imbalance. · Potassium (K+) measurements are used to monitor electrolyte balance in the diagnosis and treatment of disease conditions characterized by low or high blood potassium levels. · Ionized calcium (Ca++) measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany. · Chloride (Cl-) measurements are used in the diagnosis and treatment of electrolyte and metabolic disorders, such as cystic fibrosis and diabetic acidosis. · Hematocrit (Hct) measurements in whole blood of the packed red cell volume of a blood sample are used to distinguish normal from abnormal states, such as anemia and erythrocytosis (an increase in the number of red cells). · Glucose (Glu) measurement is used in the diagnosis, monitoring and treatment of carbohydrate metabolism disturbances including diabetes mellitus, neonatal hypoglycemia, idiopathic hypoglycemia, and pancreatic islet cell carcinoma. - · Lactate (Lac) measurement is used: - · to evaluate the acid-base status of patients suspected of having lactic acidosis; - · to monitor tissue hypoxia and strenuous physical exertion; - in the diagnosis of hyperlactatemia. · Total Bilirubin (tBili) measurement is used to aid in assessing the risk of kernicterus and hyperbilirubinemia in neonates. · CO-Oximetry (tHb, COHb, MetHb, O2Hb. HHb, and sO2) evaluates the ability of the blood to carry oxygen by measuring total hemoglobin and determining the percentage of functional hemoglobin species. • Total Hemoglobin (tHb): Total hemoglobin measurements are used to measure the hemoglobin content of whole blood for the detection of anemia. · COHb: Carboxyhemoglobin measurements are used to determine the carboxyhemoglobin content of human blood as an aid in the diagnosis of carbon monoxide poisoning. {3}------------------------------------------------ · MetHb: Methemoglobin measurements are used to determine different conditions of methemoglobinemia. · HHb: Deoxyhemoglobin, as a fraction of total hemoglobin, is used in combination with oxyhemoglobin to measure oxygen status. · O2Hb: Oxyhemoglobin, as a fraction of total hemoglobin, is used in combination with deoxyhemoglobin to measure oxygen status. • sO2: Oxygen saturation, more specifically the ratio between the concentration of oxyhemoglobin and oxyhemoglobin plus deoxyhemoglobin, is used to measure oxygen status.

The GEM Premier 5000 system provides fast, accurate, quantitative measurements of heparinized whole blood pH, pCO2, pO2, Na+, K+, Cl-, Ca++, glucose, lactate, Hct, total bilirubin and CO-Oximetry (tHb, O2Hb, COHb, MetHb, HHb, sO2) from arterial, venous or capillary samples.