Coagulation reference ranges: Difference between revisions

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{| class="wikitable"
{| class="wikitable"
|'''COAGULATION'''
|'''Parameter'''
|
|'''Units'''
|
|'''Normal range'''
|'''Therapeutic range'''
|-
|-
|INR (non-warf)
|INR  
|Ratio
|Ratio
|0.8 - 1.2
|0.8 - 1.2
|2.0 - 3.0*
|-
|-
|APTT
|APTT
|Seconds
|Seconds
|24-38
|24-38
|50 - 85 secs
|-
|-
|FIBRINOGEN
|FIBRINOGEN
|g/L
|g/L
|1.5-4.0
|1.5-4.0
|N/A
|-
|-
|TCT
|TCT
|Seconds
|Seconds
|15 - 21
|15 - 21
|N/A
|-
|D DIMER
|ug/L
|<50 yrs          500
51-60yrs        600
61-70yrs        700
71-80yrs        800
>80yrs          900
|N/A
|-
|FVIII
|iu/dl
|50 - 150
|N/A
|}
|}
<nowiki>*</nowiki><small>The INR therapeutic range may be higher for conditions such as heart valves, recurrent thromboembolism or arterial thromboembolism with associated antiphospholipid syndrome.</small>
Reviewed August 2025

Latest revision as of 02:58, 7 November 2025

Parameter Units Normal range Therapeutic range
INR Ratio 0.8 - 1.2 2.0 - 3.0*
APTT Seconds 24-38 50 - 85 secs
FIBRINOGEN g/L 1.5-4.0 N/A
TCT Seconds 15 - 21 N/A
D DIMER ug/L <50 yrs 500

51-60yrs 600

61-70yrs 700

71-80yrs 800

>80yrs 900

N/A
FVIII iu/dl 50 - 150 N/A

*The INR therapeutic range may be higher for conditions such as heart valves, recurrent thromboembolism or arterial thromboembolism with associated antiphospholipid syndrome.


Reviewed August 2025