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Test Code PTTMF Mixing Studies - APTT

Specimen Required

BD NaCitrate Light Blue 2.7mL 13×75mm

Specimen Minimum Volume

1.0 mL platelet poor plasma

Specimen Stability

2 Hours

Reference Range

See Report

Includes

CNPTT PTPTT PTNPA PTTRP

Collection Container / Tube

Preferred: 3.2% sodium citrate (light-blue-top)
Other Acceptable Container: None

Transport Container

Plastic screw-cap vial

Transport / Storage Conditions

Frozen

Special Instructions

Proper fill volume it critical to accuracy of test.Pateints should be coumadin-free for 72 hours, heparin-free for 24 hours and free from direct thrombin inhibitors (Hirudin, Argatorban, etc.) for 24 hours.

Draw a discard tube prior to light blue-top (sodium citrate) tube. Prior fill volume is critical to accuracy of test. Tube should remain stoppered. Do not centrifuge. Avoid hemolysis.

CPT Codes

85732

Alias/See Also

LAB326