Platelet Factor 4 Heparin Induced Antibody
Ordering Info & Methodology
Test Code
Cerner Synonyms
HITS
HIT Screen, Heparin Induced Thrombocytopenia Screen, Heparin Induced Antibody, Heparin - Dependent Antibody, Immunoturbidimetric
Turn Around Time
Methodology
Available on a STAT basis when HIT screening score (T4) is positive.
Ordering Guide
Specimen Requirements
Sample Type
Collection Container
Alternate Collection Containers
Citrated Plasma
Light Blue
Full Draw
Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.
Minimum Volume
Add On Stability
Collection and Shipping Requirements
Freeze. Send frozen on dry ice. Must arrive at SPH frozen. Thawed specimens will be rejected.
Reference Intervals
Female Reference Interval
Age Category | Reference Interval | units |
|---|---|---|
≥ 0 y | NEG | |
Male Reference Interval
Age Category | Reference Interval | units |
|---|---|---|
≥ 0 y | NEG | |
Additional Notes
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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.
Example
Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.
Measurement Uncertainty
All Orders must be accompanied by the “4T Score Worksheet”
HIT confirmatory testing by ELISA will be added if indicated.