I did have a UTI and I was given antibiotics for it. My OB started on it last week. I am not sure if that has anything to do with it.
The number of RBC is decreased in:
Iron deficiency (should see a low MCV)
Vitamin B6, B12, and/or Folic Acid deficiency (should see a high MCV)
Chronic Disease (Liver dysfunction - liver function tests might show abnormalities, kidney dysfunction (chemistry tests and the BUN, creatinine may be abnormal)
Hereditary anaemia(s)
Free radical pathology
Toxic metals
Catabolic Metabolism
The RDW is often increased in:
Vitamin B12 deficiency and pernicious anaemia
Folic acid anaemia
Iron deficiency anaemia combined with other anaemia
Haemolytic anaemia
Transfusions
Sideroblastic anaemia
Alcohol abuse
Various less common and hereditary anaemias
Haematocrit and haemoglobin are decreased in:
Digestive inflammation (with hidden or obvious blood loss) as might occur with parasites, colitis, haemorrhoids, etc.
Free radical pathology
Adrenal cortical hypofunction
Hereditary anaemia(s)
Hemodilution (pregnancy, oedema)
Blood loss (lung, gastrointestinal/haemorrhoids/ulcers/colitis, uterine/menses, in urine via kidneys, hemorrhage)
Deficiency (protein malnutrition, iron, copper, Vitamin C, Vitamin B1 (thiamine), folic acid, vitamin B12)
Chronic disease (liver, kidney, rheumatoid arthritis, Carcinoid, etc.)
Bone marrow insufficiency (infiltration with tumor or tuberculosis, toxic or drug induced hypoplasia)
The MCH is decreased in:
Copper deficiency
Low stomach acid (Hypochlorhydria)
Vitamin C insufficiency
Vitamin B6 deficiency
Rheumatoid arthritis
Toxic effects of lead and other toxic elements
Hereditary (thalassemias, sideroblastic)
Iron deficiency (blood loss, parasites, poor intake, low stomach acid, etc)
After a splenectomy
Haemolytic anaemia