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Doctor insights on: Low Rdw Blood

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What does a low RDW mean on a blood test?

What does a low RDW mean on a  blood test?

Means nothing: A high RDW is a measure of the variability in size among red cells. When it is low, it's a fluke of statistics, and you should ignore it -- lab "normals" are set so that a few healthy folks lie outside. I run a high RDW as a frequent blood donor, and elevation is a common first-hint that something may be unusual; many healthies have high rdw's for various reasons. Labs mean nothing in isolation. ...Read more

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Cbc done - hgb, hct low(10.6/33.3). The mcv, MCH and MCH were borderline low. The RDW high. Donated blood 1 month previous with 12.9 hgb. ? Diagnosis

Cbc done - hgb, hct low(10.6/33.3). The mcv, MCH and MCH were borderline low. The RDW  high. Donated blood 1 month previous with 12.9 hgb. ? Diagnosis

Not enough data: Most cbc's only tell us what numerically is wrong. The only sure way to tell a CBC is abnormal is to look at the peripheral smear. Your indices indicate that you may be iron deficient, however that requires a thorough assessment for blood loss from the gi, gu and respiratory tract. If you donate blood, you can exacerbate the iron deficiency. ...Read more

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MCV very high, MCH high, RDW low. Cl high. Blood in urinalysis . Vitamin B12 is on the low end, but not actually deficient. Any ideas?


MCV very high, MCH high, RDW low. Cl high. Blood in urinalysis . Vitamin B12 is on the low end, but not actually deficient. Any ideas?

How's the thyroid?: High MCV with normal B12 (did we check folate (folic acid)? do you drink?) says hypothyroidism until proved otherwise, and I see you've also listed this as a health problem. Further, you're taking vitamin B12 -- for a reason? -- but do not list thyroid Rx. Truth be told, you have a duty to get the thyroid issue addressed and managed, now, even more than to seek explanations for lab values. Be proactive. ...Read more

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Low white blood 3.6 L and high RDW 16.3 H and ALT 36 H?

Low white blood 3.6 L and high RDW 16.3 H and ALT 36 H?

Not alarming: These numbers are not far from normal if you feel healthy and keeping a well-balaced diet. ...Read more

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I had blood work up done. My rdw-cv came back 10.9, which is a tad low according to the range listed. What does this mean?

I had blood work up done.  My rdw-cv came back 10.9, which is a tad low according to the range listed.  What does this mean?

Red cell morphology: It is describing your red cell distribution size. More of a computerized data......For analysis with other CBC values. Just ignore it, if pmd has not flagged it. ...Read more

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Hi, I'm a 38yr old female whom recently had a complete blood work done and all came back normal except for mchc was low- 31.5 And my rdw was high at 15.5. I'm worried and want to know what this could indicate?

Hi,
I'm a 38yr old female whom recently had a complete blood work done and all came back normal except for mchc was low- 31.5 And my rdw was high at 15.5.  I'm worried and want to know what this could indicate?

You are NORMAL :): If your blood tests are all normal, specifically CBC test, except for mild abnormality in MCHC and RDW, then you have NO medical conditions and you are NORMAL. Why were MCHC and RDW slightly abnormal? Most likely reason is lab error, which is very common and cannot be avoided. I strongly suspect that if you get a repeat CBC test done, your MCHC and RDW will be normal, like the rest of your tests. ...Read more

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I had a pre employment blood test and had high RDW and low mpv, is this something to worry about?

I had a pre employment blood test and had high RDW and low mpv, is this something to worry about?

No not at all: If your CBC is normal, these two values have little significance. I would ignore them but make sure your hb, WBC and platelet counts are normal. ...Read more

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Blood work was good except for the following: creatinine was 1.15(tad high), alkaline phosphatatase 36 (tad low), and rdw-cv 10.9 (tad low). Worry?

Blood work was good except for the following:  creatinine was 1.15(tad high),  alkaline phosphatatase 36 (tad low), and rdw-cv 10.9 (tad low).  Worry?

No: Most blood tests have a mean peak value with upper and lower limits extending out from the bell shaped peak. Having a mean blood vessel diameter slightly off as well as a creatinine and alkpo4ase is of no consequence since it doesn't portray active disease in an organ. The alkpo4 as can be derived from various sources such as bone and lung tissue and if asymptomatic should be ignored. ...Read more

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Bloods showed high mch, high mcv, low RDW and high bilirubin. liver test/scan came back fine, what else could it be??

Bloods showed high mch, high mcv, low RDW and high bilirubin. liver test/scan came back fine, what else could it be??

Else what?: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, the first thing to rule out would be B12/Folate deficiency. What is your hemoglobin level and what are the actual values of the results? ...Read more