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Un-Fractionated Heparin Anti-Xa
Test CodeLAB166702 849
Alias/See Also
XA
UF
HEPARIN
UF
HEPARIN
CPT Codes
85520
Includes
UNFRACTIONATED HEPARIN ANTI-XA
Preferred Specimen
Plasma
Instructions
Fully collect a Blue Top (sodium citrate) tube. Underfilled tubes will not be accepted. Mix sample immediately by gentle inversion at least six times.
Transport Container
LT BLUE TOP-CITRATE
Specimen Stability
If transport time will exceed four hrs, send platelet-poor plasma 2 to -20C or less.
To obtain platelet-poor plasma: centrifuge, separate plasma, recentrifuge, and separate plasma into a transport tube.
To obtain platelet-poor plasma: centrifuge, separate plasma, recentrifuge, and separate plasma into a transport tube.
Reference Range
| Result Checking Type | Low (N) | High (N) | Numeric Range (N) |
| Reference Range | 0.30 | 0.70 | 0.30-0.70 |
| Abnormality - Critical | 0.70 | >0.70 |
Performing Laboratory
MWH LAB SH LAB
