Whole blood or plasma on ice. Clotted sample. Sample collected in glass tube. Unspun specimen > 1 hour old. Underfilled tube. Gross hemolysis
Collection Comments
Full, 2.7 mL Blue, BD 3.2% Na Citrate plastic tube. Do not send whole blood or plasma to lab on ice. Double spin and freeze plasma within 1 hour of collection. Spin at 3000 rpm for 15 minutes. Place top 2/3 of plasma in aliquot tube and spin aliquot at 3000 rpm for 15 minutes. Take top 2/3 of 2nd spin and put in another aliquot tube. Mark tube 'plasma'. Freeze immediately. Send frozen platelet poor plasma. Remember to properly label the aliquot tube with patient name, DOB, test and collect date.
Heparin is analyzed as a complex with antithrombin present in the sample. The concentration of heparin is dependent on the availability of the patient's endogenous antithrombin. Falsely decreased heparin levels may be obtained in a patient with decreased antithrombin concentration. Anti-Xa Heparin (UFH) Level is useful for the monitoring of patients on unfractionaed heparin therapy.
Performed
Monday - Sunday; Days, Evenings, Nights; Performed 24x7
Methodology
Chromogenic Assay
Reported
4 hours
Performing Lab
Coag
Other Performing Labs
Arnett and Ball Coagulation
Synonyms
430
Anti Xa Heparin (UFH) Level
UNFH
UNFH Heparin Level
Unfractionated Heparin Level
Heparin
Reference Chart
CPT Codes
85520
LOINC Codes
NAME
LOINC
Order
Anti-Xa Unfractionated Heparin Level
66483-9
Result
Anti-Xa Heparin (UFH) Lvl
66483-9
Test Code (Outreach Synonym)
430
Catalog Code
583852452
Collection
Collect
Blood, Light Blue
Preferred Draw Volume
2.7 mL
Minimum Draw Volume
Full tube
Unacceptable Conditions
Whole blood or plasma on ice. Clotted sample. Sample collected in glass tube. Unspun specimen > 1 hour old. Underfilled tube. Gross hemolysis
Collection Comments
Full, 2.7 mL Blue, BD 3.2% Na Citrate plastic tube. Do not send whole blood or plasma to lab on ice. Double spin and freeze plasma within 1 hour of collection. Spin at 3000 rpm for 15 minutes. Place top 2/3 of plasma in aliquot tube and spin aliquot at 3000 rpm for 15 minutes. Take top 2/3 of 2nd spin and put in another aliquot tube. Mark tube 'plasma'. Freeze immediately. Send frozen platelet poor plasma. Remember to properly label the aliquot tube with patient name, DOB, test and collect date.
Heparin is analyzed as a complex with antithrombin present in the sample. The concentration of heparin is dependent on the availability of the patient's endogenous antithrombin. Falsely decreased heparin levels may be obtained in a patient with decreased antithrombin concentration. Anti-Xa Heparin (UFH) Level is useful for the monitoring of patients on unfractionaed heparin therapy.
Performed
Monday - Sunday; Days, Evenings, Nights; Performed 24x7
