Sarah Anderson34 said:Question,
we had blood drawn for our son and the results were:
(K) Erythrocytes 4.90 x10e12/L 4.43 - 5.88
(K) RDW 13.3 % 11.6 - 14.3
(K) Hemoglobin 147 g/L 129 - 166
(K) Hematocrit 0.393 L/L 0.390 - 0.487
(K) MCV 80.2 fL 76.5 - 92.1
(K) MCH 30.0 pg 24.3 - 31.5
(K) MCHC 374 g/L 304 - 346 H
(K) Platelets 142 x10e9/L 178 - 420 L
(K) Reticulocytes 24 /10e3 Erc 4 - 19
Eosinophil gran. 0.6 % 0 - 9
Basophil gran. 1.6 % 0 - 3
Neutrophil gran. 25.9 % 34 - 69 L
Lymphocytes 61.5 % 19 - 52 H
Monocytes 10.4 % 5 - 13
MORPHOLOGY: Out of 100 differentiated leukocytes, 20 atypical lymphocytes were found.
Liver enzymes look great, everything else is fine—all within normal ranges.
Urine shows phosphate crystals and some bacteria.
Based on this, the doctor did an exam; nothing was swollen except for one lymph node, so he's sending him in for mono testing.
The follow-up blood work to check for mono is:
EBV VCA IgM positive 81.8
CMV IgG positive 149.0
All other EBV and CMV tests are negative.
To me, this looks like mono, but I'm not sure what exactly he already went through?
Thanks in advance for any insight.👍
Hello,
The lab results and serology align with an acute infection from the Epstein-Barr virus, which causes infectious mononucleosis. According to the data, the child previously had a cytomegalovirus infection, which also triggers mononucleosis syndrome. While there are clinical differences between these two viruses, they aren't always easy to distinguish in practice. With a CMV infection, you typically see a prolonged fever accompanied by liver and spleen enlargement, while sore throat and swollen lymph nodes are usually less prominent. Conversely, EBV infections often present with swollen lymph nodes, a sore throat combined with fever, fatigue, and frequently, an enlarged liver and spleen. Based on these findings, the child appears to be at the very onset of the infection, so the clinical picture may still develop (meaning symptoms could become more pronounced).

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