Folate and B12 produce a similar picture on a blood count, which is why both are usually tested. What MedlinePlus publishes about the folate test and its numbers.
Folate Deficiency: How It Shows Up on a CBC Read Post »
Why a B12 test is usually ordered because of something the CBC showed first, what MedlinePlus publishes about the numbers, and why the level is only part of it.
Vitamin B12 Deficiency and Your Blood Count Read Post »
RDW measures how much your red cells vary in size. What MedlinePlus and StatPearls publish about it, why it is read with MCV, and why a normal RDW is not an all-clear.
What Is RDW on a Blood Test? Read Post »
The number alone does not decide. What MedlinePlus publishes about platelet counts, why the count is read alongside symptoms, and what your report cannot tell you.
Low Platelet Count: When Is It Actually Dangerous? Read Post »
Both cause small red cells. How clinicians separate thalassemia trait from iron deficiency, why the Mentzer index is not enough, and what confirms it.
Thalassemia Trait vs Iron Deficiency: What a CBC Shows Read Post »
Hemoglobin is measured, hematocrit is usually calculated from red cell count and size. That is why the two track each other, and a mismatch is a lab flag.
Hemoglobin vs Hematocrit: Why Both Are on Your Report Read Post »
Sourced hemoglobin cutoffs by age, sex and trimester from WHO 2024 and ACOG, plus why a chart’s range and your lab’s printed range are not the same thing.
Hemoglobin Normal Range by Age, Sex and Pregnancy Read Post »
A high WBC has many documented causes besides infection, and the threshold that defines it is not the same object as your lab’s reference interval. Sourced.
High White Blood Cell Count: Does It Always Mean Infection? Read Post »
Iron studies are read as a set: what serum iron, TIBC, transferrin saturation and ferritin each measure, and why one number alone rarely settles anything.
Iron Studies Blood Test Explained: Iron, TIBC, Saturation Read Post »
