Test Code TEGHP TEG HEPARIN-ECMO, BYPASS, ETC.
Specimen and Container/Tube
Specimen Type: Whole Blood
Preferred Specimen: Light Blue Top Tube, 3.2% Sodium Citrate
Other Acceptable specimens: n/a
Volume
Preferred Volume: 2 Light Blue Top Tubes, 3.2% Sodium Citrate
Minimum Volume: 2 Light Blue Top Tubes, 3.2% Sodium Citrate
Specimen Stability
Storage Temperature |
Stability |
Room temperature |
2 hours |
Refrigerated |
not acceptable |
Frozen |
not acceptable |
Collection Instructions
- Using 21G or larger needle, collect two 2.7 mL light blue top tubes after 3 mL discard (5 mL discard if from indwelling catheter).
- Gently invert (do not shake!) sample tube 5 times.
Specimen Handling and Transport Instructions
UCMC Onsite Instructions:
- Collect specimen per standard collection procedure and send to laboratory immediately.
- Sample must NOT be refrigerated or exposed to excessive heat.
UCMC Offsite and UC MedLab Outreach Instructions:
- Sample must NOT be refrigerated or exposed to excessive heat.
- Specimen must reach laboratory within 2 hours of blood collection.
- Do NOT centrifuge.
- Do NOT freeze
Rejection Criteria
- Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
- Specimens that have wrong ratio of blood to anticoagulant (fill volume), clotted or grossly hemolyzed.
Reference Values
Test |
Age |
Sex |
Reference Range |
Kaolin R Time |
All |
All |
4.0 - 8.0 minutes |
Kaolin K time |
All |
All |
1.0 - 2.1 minutes |
Kaolin Angle |
All |
All |
60.0 - 73.0 degrees |
Kaolin Max Amplitude |
All |
All |
57.0 - 74.0 mm |
Kaolin Lysis |
All |
All |
0.0 - 5.0 % |
Kaolin R Time, Hepatinase |
All |
All |
4.0 - 8.4 minutes |
Kaolin K Time, Heparinase |
All |
All |
1.0 - 2.4 minutes |
Kaolin Angle, Heparinase |
All |
All |
57.0 - 72.0 degrees |
Kaolin Max Amplitude, Heparinase |
All |
All |
55.0 - 72.0 mm |
Kaolin Lysis, Heparinase |
All |
All |
0.0 - 5.0 % |
Critical Values
Analyte |
Unit |
Low |
High |
Age |
N/A |
N/A |
N/A |
N/A |
N/A |
Test Components
- TEG Kaolin: R-time, K-time, Angle, MA and LY30
- TEG Kaolin post Heparinase: R-time, K-time, Angle, MA and LY30
- Pathologist Interpretation. If selected, it will be resulted into EPIC by the end of the next business day following TEG 5000 testing.
In instances where more immediate interpretations may be needed, please contact:
Monday - Friday, 8AM - 5PM: Coagulation Laboratory at 2-1315
All other times: Laboratory Medicine Resident On-Call (LMROC) at Pager 7910
Clinical Indications
Monitoring of heparin therapy.
Methodology
Thromboelastography
CPT Codes
85347, 85525, 85390
LOINC Codes
67790-6, 69552-8
Additional Information
- Please document any drugs affecting hemostasis as well as any recent transfusions/fluid resuscitations in the relevant parts of this order in EPIC.
- TEGHP assays will be visible in Citrix (TEG Manager).
- 3.2% sodium citrate light blue top tubes must have 9 to 1 ratio of blood to anticoagulant
Turnaround Time
Turnaround times are relative to the time the specimen is received in the test laboratory.
STAT Turnaround Time: n/a
Routine Turnaround Time: 2 hours
Testing Schedule: 24/7
Synonyms/Keyword Search
Thromboelastograph; TEG; cardiopulmonary bypass; ECMO, TEG2
Last Review Date
01/11/2022