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Test Code EXTEM Thromboelastometry, EXTEM and FIBTEM

Important Note

Test is only available to patients on-site at NUH. Prior arrangement is required.

For NUH patient, please call Haematology at 67725320 for appointment

Laboratory Code

LAB3041316

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
EXTEM, CT 53 – 80 sec
EXTEM, CFT 59 – 128 sec
EXTEM, Alpha Angle 65 – 78 Degree (°)
EXTEM, A5 35 – 54 mm
EXTEM, A10 45 – 63 mm
EXTEM, A20 52 – 68 mm
EXTEM, A30 Not available mm
EXTEM, MCF 54 – 70 mm
EXTEM, LI30 99 – 100 %
EXTEM, LI45 Not available %
EXTEM, LI60 Not available %
EXTEM, ML 2 – 16 %
FIBTEM, CT 50 – 80 sec
FIBTEM, CFT Not available sec
FIBTEM, Alpha Angle 56 – 77 Degree (°)
FIBTEM, A5 9 – 21 mm
FIBTEM, A10 9 – 23 mm
FIBTEM, A20 10 – 24 mm
FIBTEM, A30 Not available mm
FIBTEM, MCF 10 – 24 mm
FIBTEM, LI30  98 – 100 %
FIBTEM, LI45 Not available %
FIBTEM, LI60 Not available %
FIBTEM, ML 0 – 10 %

Testing Laboratory

National University Hospital

Haematology, 67725320

Useful For

Assessment of the extrinsic coagulation pathway and fibrinogen level

Service Code

12509

LOINC Code Information

EXTEM, COAGULATION TIME(CT) 52773-9
EXTEM, CLOT FORMATION TIME(CFT) 52770-5
EXTEM, MAXIMUM CLOT FIRMNESS(MCF) 52783-8
EXTEM, MAXIMUM LYSIS(ML) 52786-1
FIBTEM, MAXIMUM CLOT FIRMNESS(MCF) 52780-4

 

Alias

Rotem

Update

Last updated 20/03/2025

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