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HelpTest Code RPTL Reptilase Time, Plasma
Additional Codes
| Mayo | RTSC |
| Epic ID | LAB1136 |
Special Instructions
Specimen Type
Plasma Na CitSpecimen Required
Specimen Type: Platelet-poor plasma
Collection Container/Tube: Light-blue top (citrate)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL Platelet poor plasma
Collection Instructions:
1. For complete instruction, see Coagulation Guidelines for Specimen Handling and Processing.
2. Centrifuge, transfer all plasma into a plastic vial, and centrifuge plasma again.
3. Immediately freeze plasma (no longer than 4 hours after collection) at -20° C or, ideally at -40° C or below.
Additional Information:
1. Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.
2. Each coagulation assay requested should have its own vial.
Specimen Minimum Volume
Platelet poor plasma: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma Na Cit | Frozen | 14 days |
Transport frozen.
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Method Name
Optical Clot-Based
Useful For
Evaluation of a prolonged thrombin time (TT) (mainly used to confirm or exclude the presence of heparin in the specimen)
Evaluating hypofibrinogenemia or dysfibrinogenemia in conjunction with the TT and fibrinogen assay
Day(s) Performed
Monday through Friday
Report Available
1 to 4 daysReference Values
14.0-23.9 Seconds
CPT Code Information
85635