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HelpTest Code LAPAN LUPUS ANTICOAGULANT PANEL
Additional Codes
| Software | Test Code |
|---|---|
| Label Text | LAPAN |
| EPIC | LAB20118 |
Performing Laboratory
NorDx Laboratories
Useful For
The detection of lupus anticoagulant in a patient with a prolonged PTT result.
Panel includes:
Drvvt screen
Drvvt confirmation
Interpretation
Partial thromboplastin time (PTT), plasma
Silica clot time confirmation
Silica clot time screen
If lupus anticoagulant screen is abnormal, the following tests will be performed at an additional charge:
Drvvt confirmation assay
Drvvt mixing assay
Silica mixing study
PTT using reagent more sensitive to factor deficiencies (dade actin FS)
If the thrombin time is greater than 30 seconds, a Reptilase time test will be performed.
Method Name
Clot-Based Assay
Reference Values
An interpretive report will be issued
Days and Times Test Performed
1 day weekly
Report Available
14 Days
Specimen Type
Submit all of the following:
~ Plasma
~ Whole Blood
Preferred Container
Lavender Top Tube (EDTA)
Light Blue Top Tube (Sodium Citrate) – 3 Tubes – each must be full at time of collection.
Specimen Collection and Handling
BOTH CITRATED PLASMA AND EDTA WHOLE BLOOD ARE REQUIRED.
BLUE TOP TUBES:
Collect specimen as follows:
1. Draw blood in 3 light blue-top (3.2% sodium citrate) tube(s). Tube(s) must be full upon collection.
2. Separate plasma from cells as soon as possible within 4 hours of collection in a centrifuge at 2,500 rpm for 15 minutes or 3,000 rpm for 10 minutes.
3. Using a plastic transfer pipette (do not use a glass pipette) decant the plasma to a screw-capped, plastic (polypropylene) vial. Glass vials will not be accepted.
4. Spin the plasma again at 2,500 rpm for 15 minutes or 3,000 rpm for 10 minutes. Note: Double spinning the specimen ensures platelet poor plasma (<10,000 uL)
5. Divide the plasma into as many 0.5-1.0 mL aliquots as possible and cap the vial(s) tightly.
6. Place tubes upright and flash freeze specimen(s) immediately at ≤ – 20° C or below.
7. Send specimen(s) FROZEN on dry ice.
Click here to view the Procedure for Collecting a Specimen from an A-line
LAVENDER TOP TUBE:
Mix sample well and send a minimum of 1mL of EDTA whole blood refrigerated.
Sample to be used for a hematocrit result that is run at no charge and will be non-reportable (rule out abnormal results due to hematocrit >55%).
If a high hematocrit is detected the client will be contacted to determine the need for a recollect in properly adjusted blue top tubes. A coagulation pathologist will assess this need with the client.
Specimen Stability Information
Specimen Type: Plasma
Room Temp: 4 Hours
Note: Whole blood that remains capped and unspun is stable for up to 4 hours when stored at room temperature (18 – 24°C). Frozen plasma is stable 2 weeks @ -20°C and 12 months @ -70°C. Blue top tubes for coag assays must not be refrigerated or placed on ice.
Specimen Type: Whole Blood
Refrigerated: 24 Hours
Add On Capable
Yes – if testing is added before the specimen is past 4 hour stability limit at room temperature. Add on testing also possible if plasma is still available frozen @ -70. Please contact the Bramhall Special Coagulation Laboratory to verify that frozen plasma is still available to perform the request.
Advance Beneficiary Notice Requirements
This test, when ordered on Medicare patients, is subject to the National Coverage Determination (NCD) policies. Please verify that the diagnosis code (ICD code) you have chosen demonstrates medical necessity for the test as documented in the physician’s patient record. The CMS web site is available to assist you with this verification. A properly executed Advance Beneficiary Notice (ABN) must be submitted with the specimen if medical necessity is not demonstrated by the ICD code chosen.
CPT Code Information
|
CPT Code |
CPT Description |
CPT Disclaimer |
|---|---|---|
| 84285 | Assay of Silica, Quantitative | |
| 84285 | Assay of Silica, Quantitative | if Indicated |
| 84285-59 | Assay of Silica, Quantitative | |
| 85610 | Prothrombin Time | |
| 85613 | Russell Viper Venom Time (Includes Venom); Diluted | |
| 85613 | Russell Viper Venom Time (Includes Venom); Diluted | |
| 85613 | Russell Viper Venom Time (Includes Venom); Diluted | if Indicated |
| 85635 | Reptilase Test | if Indicated |
| 85670 | Thrombin Time, Plasma | if Indicated |
| 85730 | Thromboplastin Time, Partial (PTT), Plasma or Whole Blood | |
| 85730 | Thromboplastin Time, Partial (PTT), Plasma or Whole Blood | if Indicated |
Keywords
LUPUS ANTICOAGULANT
LUPUS INHIBITOR
PARTIAL THROMBOPLASTIN TIME (PTT)
PT (PROTHROMBIN TIME)
VENOM TIME, PLASMA
Performing Laboratory Location
NorDx Laboratories
Rejection Information
Underfilled (<90%), clotted, or grossly hemolyzed. If a high hematocrit is detected the client will be contacted to determine the need for a recollect in properly adjusted blue top tubes.