Introduction The hemogram and hemogram-derivative ratios (HDRs) are becoming markers of the severity and mortality of COVID-19. We evaluated the hemograms and serial weekly HDRs [neutrophil-lymphocyte ratio (NLR), monocyte-lymphocyte ratio (MLR), platelet-lymphocyte ratio (PLR), neutrophil-platelet ratio (NPR) and systemic immune-inflammatory index (SII)] in the survivors and non-survivors of COVID-19. Methods We retrospectively reviewed the medical notes and serial hemograms of real-time reverse-transcription polymerase chain reaction (RT-PCR)-confirmed COVID-19 adults hospitalized from April 2020 to March 2021 from the time of diagnosis to the 3rd week of diagnosis. Results Of the 320 adults, 257 (80.3%) were survivors and had a lower mean age than the non-survivors (57.73 vs. 64.65 years, p < 0.001). At diagnosis, the non-survivors had lower hematocrit (p = 0.021), and lymphocyte (p = 0.002) and basophil (p = 0.049) counts and the hematocrit showed a p-value (Is this what you meant???) of 0.021); higher NLR (p < 0.001), PLR (p = 0.047), NPR (p = 0.022) and SII (p = 0.022). Using general linear models, the survivors and non-survivors showed significant variations with weekly lymphocyte count (p < 0.001), neutrophil count (p = 0.005), NLR (p = 0.009), MLR (p = 0.010) and PLR (p = 0.035). All HDRs remained higher in the non-survivors in the 2nd week and 3rd week of diagnosis and the HDRs were higher in the intubated patients than in the non-intubated patients. The NLR and SII were more efficient predictors of mortality in COVID-19 patients. Conclusions This study shows that serial lymphocyte and neutrophil counts, NLR, PLR, MLR, NPR and SII could serve as good and easily accessible markers of severity and predictors of outcomes in COVID-19 patients and should be used for the monitoring of treatment response. hemogramderivative derivative (HDRs COVID19. COVID19 COVID 19. 19 neutrophillymphocyte , (NLR) monocytelymphocyte monocyte (MLR) plateletlymphocyte platelet (PLR) neutrophilplatelet (NPR immuneinflammatory immune inflammatory (SII) nonsurvivors non realtime real reversetranscription reverse transcription RTPCRconfirmed RT PCR confirmed COVID-1 202 rd 32 25 80.3% 803 80 3 (80.3% 57.73 5773 57 73 (57.7 vs 6465 64 65 64.6 years 0.001. 0001 0.001 . 0 001 0.001) 0.021, 0021 0.021 021 0.021) 0.002 0002 002 0.049 0049 049 pvalue value Is meant meant??? 0.001, 0.047, 0047 0.047 047 0.047) 0.022 0022 022 0.022. models 0.005, 0005 0.005 005 0.005) 0.009, 0009 0.009 009 0.009) 0.010 0010 010 0.035. 0035 0.035 035 0.035) nd nonintubated response COVID1 1 (NLR (MLR (PLR (SII COVID- 20 2 80.3 8 (80.3 57.7 577 5 7 (57. 646 6 64. 000 0.00 00 0.02 02 0.04 004 04 meant?? 0.01 01 003 0.03 03 80. (80. 57. (57 0.0 meant? (80 (5 0. (8 (

A deficiência de ferro e a beta-talassemia heterozigótica são importantes causas de microcitose e hipocromia. São propostos dois parâmetros laboratoriais para auxiliar na diferenciação entre essas anemias. O número de reticulócitos altamente imaturos e níveis do receptor solúvel da transferrina foram determinados em pacientes com anemia ferropriva (n = 49) e com beta-talassemia heterozigótica (n = 43). Não houve diferença significativa entre os valores de reticulócitos altamente imaturos e níveis de receptor solúvel da transferrina nos dois grupos, mas foi observada uma correlação entre reticulócitos altamente imaturos e níveis de receptor solúvel da transferrina no grupo com anemia ferropriva, provavelmente devido à um estímulo para a síntese do receptor em resposta à deprivação de ferro nos eritrócitos.

Iron deficiency and heterozygous beta-thalassemia are important causes of hypochromic-microcytic anemia. Two laboratory parameters are suggested for the differentiation of such anemia. High-fluorescence reticulocyte counts and soluble transferrin receptor levels were determined in iron-deficiency anemia patients (n = 49) and heterozygous beta-thalassemia patients (n = 43). There was no significant difference in high-fluorescence reticulocyte and soluble transferrin receptor values between the two groups, but a correlation was observed between high-fluorescence reticulocytes and soluble transferrin receptors in iron-deficiency anemia, probably due to increased receptor synthesis as a response to decreased iron content in erythrocytes.