Test Code LAB93787 Citrated TEG (CARDIAC) with heparinase
Additional Codes
TEG, Citrated TEG (Cardiac) with heparinase, Citrated TEG - Cardiac
Reporting Title
Citrated TEG (CARDIAC) with heparinase
Methodology
TEG® 6s Hemostasis Analyzer records the kinetic changes in a sample of anticoagulated whole blood as the sample clots, retracts and/or lyses in real time. Addition of heparinase allows evaluation for the presence of heparin in the sample.
Indicated for monitoring a patient's coagulability and the need for heparin reversal.
Performing Laboratory
Riverside, Grant and Mansfield Laboratories
Specimen Requirements
Specimen Type
Whole Blood Sodium Citrate
Specimen Required
Container/Tube: 2 Blue Top tubes: 3 ml (preferred) or 2 ml
Specimen Volume: Tubes must be filled to arrow to ensure appropriate anticoagulant to blood ratio.
Collection instructions:
- Prepare the arm for normal phlebotomy using alcohol sponge and sterile gauze. Apply tourniquet and make a clean venipuncture using a 19 - 21G butterfly needle. Discard the first 3-5 ml, which contains tissue contaminants (can be used for other, non-coagulation testing). Draw two blue-capped tubes containing 0.5 ml of 3.2% (0.105 M) sodium citrate (pH7.4). Cap and mix blood with the citrate by gentle inversion 5-7 times in order to mix well but not activate clotting factors. Do not mix again until ready to assay.
- Collection of citrated whole blood from indwelling venous blood line.
- Do not obtain blood from a heparinized access line, lock, or indwelling heparin lock.
- Discontinue fluid drip, if required.
- Draw 10 cc of blood with one syringe – discard.
- Draw two blue-capped tubes containing 0.5 ml of 3.2% (0.105 M) sodium citrate (pH 7.4). Cap and mix blood with the citrate by gentle inversion 5-7 times in order to mix well but not activate clotting factors. Do not mix again until ready to assay.
Samples can be used after a 10-minute incubation (laying flat on their side) and within 2 hours of draw to maintain in-use stability
Specimen Stability
TEG testing must be completed by the following times after collection: 4 hours (RMH, GMC and MH)
Reference Values
CK-R 4.6-9.1 min
CK-K 0.8-2.1 min
CK-A 63-78 degrees
CK-MA 52-69 mm
CRT-MA 52-70 mm
CKH-R 4.3-8.3 min
CFF-MA 15-32 mm
CFF-FLEV 278-581 mg/dL
Limitations: TEG 6s analyzer results should always be considered within the clinical context of the individual patient’s case. In the event of inconsistencies with the patient’s clinical status, samples should be repeated or supplemented with additional clinical information and/or data including performance verification in the user’s patient population.
Day(s) Test Set Up
Monday through Sunday
24 hours a day
CPT Code
TEG 85347
Fibrinogen 85384