Description

Results of hematology or coagulation tests can be converted between conventional (US) and SI units if the conversion factors are known.


Specimen: whole blood or plasma

 

Hematology Test

Specimen

Conventional Units

Factor for Conversion

SIU Units

Fetal Hemoglobin

blood, whole

%

0.01

mol/mol

Hematocrit

blood, whole

%

0.01

volume fraction

Hemoglobin

blood, whole

g/dL

10

g/L

Hemoglobin

blood, whole

g/dL

0.155

mmol/L

Hemoglobin

plasma

mg/dL

0.155

µmol/L

MCH

blood, whole

pg/cell

1

pg/cell

MCH

blood, whole

pg/cell

0.06206

fmol/cell

MCHC

blood, whole

g/dL

10

g/L

MCV

blood, whole

cubic microns

1

fL

Platelet Count

blood, whole

10^3/µL

1

10^9/L

RBC

blood, whole

10^6/µL

1

10^12/L

Reticulocytes

blood, whole

reticulocytes/µL

0.001

10^9/L

WBC

blood, whole

10^3/µL

1

10^9/L

 

 

Coagulation Test

Specimen

Conventional Units

Factor for Conversion

SIU Units

Antithrombin III

plasma

mg/dL

10

mg/L

Antithrombin III

plasma

U/dL

10

U/L

Coagulation Factors

plasma

U/mL

1000

U/L

Fibrin Degradation Products

plasma

µg/mL

1

mg/L

Fibrinogen

plasma

mg/dL

0.01

g/L

Plasminogen

plasma

mg/dL

10

mg/L

Plasminogen

plasma

U/dL

10

U/L

Protein C

plasma

mg/dL

10

mg/L

Protein C

plasma

U/dL

10

U/L

Protein S

plasma

mg/dL

10

mg/L

Protein S

plasma

U/dL

10

U/L

 


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