rdw

rdw

RDW (Red Cell Dis ibu io Wid h)

Wha is a Red Cell Dis ibu io Wid h Tes ?

A ed cell dis ibu io wid h (RDW) es measu es he diffe e ces i he volume a d size of you ed blood cells (e y h ocy es). Red blood cells ca y oxyge f om you lu gs o eve y cell i you body. You cells eed oxyge o g ow, make ew cells, a d s ay heal hy.

No mally, you ed blood cells a e all abou he same size. A high RDW mea s ha he e's a majo diffe e ce be wee he size of you smalles a d la ges ed blood cells. This may be a sig of a medical co di io .

O he ames: RDW-SD (s a da d devia io ) es , E y h ocy e Dis ibu io Wid h

Wha is i used fo ?

The RDW blood es is of e pa of a comple e blood cou (CBC), a es ha measu es ma y diffe e pa s of you blood, i cludi g ed cells. The RDW es is commo ly used o help diag ose a emia, a co di io i which you ed blood cells ca ' ca y e ough oxyge o he es of you body.

The RDW es may also be used wi h o he es s o help diag ose o he co di io s, i cludi g halassemia, a i he i ed disease ha ca cause seve e a emia.

Why do I eed a RDW es ?

You heal h ca e p ovide may have o de ed a comple e blood cou , which i cludes a RDW es , as pa of a ou i e exam, o if you have:

Wha happe s du i g a RDW es ?

A heal h ca e p ofessio al will ake a blood sample f om a vei i you a m, usi g a small eedle. Af e he eedle is i se ed, a small amou of blood will be collec ed i o a es ube o vial. You may feel a li le s i g whe he eedle goes i o ou . This p ocess ge e ally akes less ha five mi u es.

Will I eed o do a y hi g o p epa e fo he es ?

No special p epa a io is ecessa y.

A e he e a y isks o he es ?

The e is ve y li le isk o a blood es . You may expe ie ce sligh pai o b uisi g a he spo whe e he eedle was pu i , bu mos symp oms go away quickly.

Wha do he esul s mea ?

RDW esul s help you p ovide u de s a d how much you ed blood cells va y i size a d volume. Eve if you RDW esul s a e o mal, you may s ill have a medical co di io ha eeds ea me . Tha 's why you p ovide will usually look a you RDW esul s alo g wi h he esul s of o he blood es s. The combi ed es esul s ca show a mo e comple e pic u e of you ed blood cells o help diag ose a va ie y of co di io s, i cludi g:

A high RDW esul ca also be a sig of o he co di io s, such as:

You p ovide will mos likely eed mo e es s o co fi m a diag osis.

Lea mo e abou labo a o y es s, efe e ce a ges, a d u de s a di g esul s.

Is he e a y hi g else I eed o k ow abou a ed cell dis ibu io wid h es ?

If you es esul s i dica e you have a ch o ic blood diso de , such as a emia, you may be pu o a ea me pla o i c ease he amou of oxyge ha you ed blood cells ca ca y. Depe di g o you specific co di io , you p ovide may ecomme d i o suppleme s, medici es, a do cha ges i you die .

Be su e o alk o you p ovide befo e aki g a y suppleme s o maki g a y cha ges i you ea i g pla .

Refe e ces

Rela ed Heal h Topics

Rela ed Medical Tes s

The i fo ma io o his si e should o be used as a subs i u e fo p ofessio al medical ca e o advice. Co ac a heal h ca e p ovide if you have ques io s abou you heal h.

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