Please note that this site is unsupported on Internet Explorer, and may not function as intended.

We recommend upgrading to the latest version of Microsoft Edge, Google Chrome or Firefox.

Test & Collection Guide

 New search...

Keyword Search:

Test name:

   

Manual search:

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

NUMBER

ALL

Coagulation Studies

Ordering information:

Please note that Coagulation Studies consists of the following tests :

PT (INR)

APTT

Thrombin Time (TT)

Fibrinogen

Laboratory:
Coagulation
Test Code:
COAGP
Specimen types:
Plasma
Container types:
Sodium CitrateSodium Citrate
Collection Instructions:

Do not use 1.0 mL citrate tubes

Notes:

When blood is collected from an arterial line it is necessary to discard the first 20 mL of blood to clear any heparin from the line before collecting the blood for coagulation tests

When collection is by vacuum tube, the coagulation tube should be collected second to avoid artefactual shortening of coagulation assays due to trauma of venesection

When blood is collected for an APTT or Anti-Xa Assay for control of heparin or low molecular weight heparin therapy, it is essential that the citrate tube is sent immediately to the laboratory

Frequency:
Daily
Result Turnaround Time:
2 hours
Reference Interval:

Adult reference intervals:

PT 10 - 15 sec

INR 0.9 - 1.3

APTT 25 - 37 sec

TT 11 - 17 sec

FIB 1.9 - 4.3 g/L

Laboratory Use Only
Storage Instructions:

Fill to label marker and mix by inversion