<prompt> What is the lower limit of normal hemoglobin concentration for the male between 15-17 years of age -12 gm13 gm14gm15gm  <response>: Ans. is b i.e., 13 gm Normal Mean and lower limits of normal for hemoglobin, hematocrit, and Mean corpuscular volume Hemoglobin gdLHematocrit Mean corpuscular volume mm3Age YrMeanLower LimitMeanLower LimintMeanLower Limit0.5-1.912.511.0373377702-412.511.0383479735-713.011.5395581758-1113.512.04036837612-14 Female13.512.041368578Male14.012.54337847715-17 Female14.012.041368779Male15.013.04638867818-49 Female14.012.042379080Male16.014.047409080 