## 28 May, 2011

### CONVERSIONS - COMMON & UNCOMMON ONES WE NEED!! PART 2

Divide pmol/L by 6.945 to get µIU/mL
Multiply µIU/mL by 6.945 to get pmol/L

To convert Iron (total ) readings:-
Divide µmol/L by 0.179 to get µg/dL
Multiply µg/dL by 0.179 to get µmol/L

To convert LDL and HDL readings:-
Divide the mg/dL by 38.67 to get mmol/L.
Multiply the mmol/L by 38.67 to get mg/dL.
OR
Divide the mmol/L by 0.0259 to get mg/dL
Multiply the mg/dL by 0.0259 to get mmol/

Divide the µg/dl by 5.494 to get µmol/L
Multiply the µmol/L by 5.494 to get µg/dl

Divide the mEq/l by 1 to get mmol/L.
Multiply the mmol/L by 1 to get mEq/l. This is therefore a 1-1 conversion. (The two are the same!)

To convert Protein (serum total) readings:-
Divide g/dl by 0.1000 to get g/L
Multiply g/L by 0.1000 to get g/dl
OR
Divide g/L by 10.0 to get g/dL
Multiply g/dL by 10.0 to get g/L
To convert Protein (urine/fluid total) readings:-
Divide mg/dl by 0.1000 to get mg/L
Multiply mg/L by 0.1000 to get mg/dl

To convert the Reticulocyte count readings:-
Conventional units use ‘% of RBCs’
SI units use ‘Proportion of 1.0’
Divide ‘Proportion of 1.0’ by 0.01 to get ‘% of RBCs’
Multiply ‘% of RBCs’ by 0.01 to get ‘Proportion of 1.0’

Divide the µg/dl by 7.896 to get µmol/L
Multiply the µmol/L by 7.896 to get µg/dl

Divide mmol/L by 0.411 to get mg/dl
Multiply mg/dL by 0.411 to get mmol/L
OR
Divide the mg/dl by 2,430 to get mmol/L
Multiply the mmol/L by 2.430 to get mg/dl
Or if your results are given in mEq/L then:-
Divide mmol/L by o.5o to get mEq/L
Multiply mEq/L by 0.50 to get mmol/L
OR
Divide mEq/L by 2.0 to get mmol/L
Multiply mmol/L by 2.0 to get mEq/L

Divide the µg/dl by 6.541 to get µmol/L
Multiply the µmol/L by 6.541 to get µg/dl.
OR
Divide µmol/L by 0.153 to get µg/dL
Multiply the µg/dL by 0.153 to get µmol/L

Divide the mEq/l by 1 to get mmol/L.
Multiply the mmol/L by 1 to get mEq/l. This is therefore a 1-1 conversion. (The two are the same!)

To convert Thyroxine, free (T4) readings:-
Divide pmol/L by 12.87 to get ng/dL (nanograms per decilitre)
Multiply ng/dL by 12.87 to get pmol/L (picomoles per litre)
To convert Thyroxine, total (T4) readings:-
Divide nmol/L by 12.87 to get µg/dL
Multiply µg/dL by 12.87 to get nmol/L
Divide the mmol/L by 0.0259 to get mg/dL
Multiply the mg/dL by 0.0259 to get mmol/L
To convert Triiodothyronine free (T3) readings:-
Divide pmol/L by 0.0154 to get pg/dL
Multiply pg/dL by 0.0154 to get pmol/L

To convert Triiodothyronine total (T3) readings:-
Divide nmol/L by 0.0154 to get ng/dL
Multiply ng/dL by 0.0154 to get nmol/L

Divide the mg/dL by 88.57 to get mmol/L.
Multiply the mmol/L by 88.57 to get mg/dL.
OR
Divide mmol/L by 0.0113 to get mg/dL
Multiply mg/dL by 0.0113 to get mmol/L

To convert Urea Nitrogen (BUN) readings:-
Divide mmol/L by 0.357 to get mg/dL
Multiply mg/dL by 0.357 to get mmol/L

Divide µmol/L by 59.48 to get mg/dL
Multiply mg/dL by 59.48 to get µmol/L

To convert Vitamin A (retinol) readings:-
Divide µmol/L by 0.0349 to get µg/dL
Multiply µg/dL by 0.0349 to get µmol/L

To convert Vitamin B6 (pyridoxine) readings:-
Divide nmol/L by 4.046 to get ng/mL
Multiply ng/mL by 4.046 to get nmol/L

To convert Vitamin B12 (cyanocobalamin) readings:-
Divide pmol/L by 0.738 to get pg/mL
Multiply pg/mL by 0.738 to get pmol/L

To convert Vitamin C (ascorbic acid) readings:-
Divide µmol/L by 56.78 to get mg/dL
Multiply mg/dL by 56.78 to get µmol/L

a)1,25-Dihydroxyvitamin D
Divide pmol/L by 2.6 to get pg/mL
Multiply pg/mL by 2.6 to get pmol/L
Or
Divide nmol/L by 2.496 to get ng/mL
Multiply ng/mL by 2.496 to get nmol/L

Divide µmol/L by 23.22 to get mg/dL
Multiply mg/dL by 23.22 to get µmol/L