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HelpTest Code INTEM Thromboelastometry, INTEM and HEPTEM
Laboratory Code
LAB3041317
Specimen Requirements
Specimen Type: Whole Blood
Container/Tube: 1 Light Blue Top (3.2% Sodium Citrate)
Volume: 2.7 mL Whole Blood (Tubes must be full)
Collection Instructions: Hand deliver whole blood specimen to laboratory immediately. Do NOT send whole blood specimen via pneumatic tube.
Specimen Stability
| Specimen Type | Whole Blood |
|---|---|
| Ambient | 4 hours (preferred) |
| Refrigerate | Not available |
| Frozen | Not available |
Methodology
Viscoelastic
Days and Times Performed
Monday through Sunday, 08:30am to 08:00pm, TAT 2 hrs
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others: Clotted or insufficient specimen | Reject |
Reference Interval
| Parameters | Reference Interval for Adults | Units |
|---|---|---|
| INTEM, CT | 156 – 223 | sec |
| INTEM, CFT | 56 – 114 | sec |
| INTEM, Alpha Angle | 67 – 78 | Degree (°) |
| INTEM, A5 | 35 – 53 | mm |
| INTEM, A10 | 45 – 62 | mm |
| INTEM, A20 | 52 – 68 | mm |
| INTEM, A30 | Not available | mm |
| INTEM, MCF | 53 – 69 | mm |
| INTEM, LI30 | 97 – 100 | % |
| INTEM, LI45 | Not available | % |
| INTEM, LI60 | Not available | % |
| INTEM, ML | 4 – 17 | % |
| HEPTEM | Not available. To be Interpreted with INTEM. |
Testing Laboratory
National University Hospital
Haematology, 67725320
Useful For
Assessment of the intrinsic coagulation pathway and heparin-independent assessment of intrinsic coagulation pathway
Service Code
12510
LOINC Code Information
| INTEM, COAGULATION TIME(CT) | 52776-2 |
|---|---|
| INTEM, CLOT FORMATION TIME(CFT) | 52771-3 |
| INTEM, MAXIMUM CLOT FIRMNESS(MCF) | 52781-2 |
| INTEM, MAXIMUM LYSIS(ML) | 52787-9 |
| HEPTEM, COAGULATION TIME(CT) | 52775-4 |
| HEPTEM, CLOT FORMATION TIME(CFT) | 52772-1 |
| HEPTEM, ALPHA ANGLE(A) | 66750-1 |
| HEPTEM, MAXIMUM CLOT FIRMNESS(MCF) | 52782-0 |
| HEPTEM, MAXIMUM LYSIS(ML) | 52788-7 |
Alias
Rotem
Update
Last updated 20/03/2025