Mix PTT Panel
Label Mnemonic: MIX
Epic code: LAB1110
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
6240 RCP
Collection Medium:
Light Blue top tube 2.7 mL (Na Citrate)
Full draw; 2.7 mL light blue top (mix well).
Rejection Criteria:
QNS, clot, excessive hemolysis
Delivery Instructions:
Deliver to laboratory within 1 hour of collection.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
2 hours (upon receipt in laboratory)
Reference Range:
PTT = 22-31 sec
MPTT = 22-31 sec
Fibg = 194-488 mg/dL
TT = 17-20 sec

Fibg and TT reference ranges updated on 12/16/2019 due to new assay reagents.
Interpretive Data:
A PTT mix panel is performed to screen for a factor deficiency or inhibitor.
A MIX testing panel should have its own draw tube and not be combined with other coagulation tests or panels to ensure an adequate amount of plasma for testing.

Instrumentation changed from BCS-XP to CS-5100 on 12/16/2019.
Optical clot detection.
CPT Code:
85730, 85732, 85384, 85670