Reference Range basics

Question 1

adult WBC; 0-1d; 1d- 1 week old

Answer 1

3.5 to 10.5 x 10^3/uL;

9-30; 9.4-34 x 10^3 / uL (babies!)

Question 2

adult RBC; M and F

Answer 2

M: 4.3 to 5.7
F: 3.9 to 5

think 3.5 to 6 in general

Question 3

Hgb. M and F

Answer 3

M: 14 to 18
F: 12 to 16

Question 4

Hct. M and F

Answer 4

M: 42 - 52%…
F: 36 to 46%

Question 5

MCV, M and F

Answer 5

80 to 100…..

M: 81 to 95 fL
F: 81.6 to 98 fL

Question 6

MCH, both

Answer 6

27 to 33 pg

Question 7

MCHC, M and F

Answer 7

OVERALL< 32 to 37 % or g/dL

M: 33.3 to 35 g/dL (% as well)
F: 33.1 to 34.4

Question 8

RDW-CV

Answer 8

M: 11.8 to 15.6 (wider)
F: 11.9 to 15.5 (narrower by a tenth each way)

Question 9

PLT

Answer 9

150 to 450 x 10^3/uL

Question 10

MPV

Answer 10

7 to 11 fl

Question 11

Neutro diff % and absolute

Answer 11

44 to 70%; 1.7 to 7 x 10^3/uL

Question 12

Lymph % diff and absolute

Answer 12

18 to 42%; 0.9 to 2.9 x 10 ^3/uL

Question 13

Mono % diff normal

Answer 13

5 to 15%;

Question 14

Eos % diff and absolute

Answer 14

0.8 to 7 %; 0.05 to 0.5 x 10^3/uL

Question 15

Baso % diff and abs

Answer 15

0 to 2.2%;

Question 16

Retic % and abs M and F

Answer 16

0.5 to 2 %; M: 21 to 114K; F 20 to 100K

Question 17

How is MCV calculated? what are the units?

Answer 17

HCT over RBC count in 10^12/L, times 10; in femtoliters

Question 18

how is MCH calculated? units?

Answer 18

hemoglobin in g/dL over RBC count in 10^12/L, times 10; picograms

Question 19

formula to calculate MCHC, and units

Answer 19

Hgb in g/dL over HCT, times 100. Grams per deciliter, or %.

Question 20

An MCHC greater than 37 can indicate? give 3 possibilities

Answer 20

error in either RBC or Hgb measurement, or spherocytes present

Question 21

how is HCT calculated by many automated cell counters?

Answer 21

the MCV times times the RBC count (in 10^12 /L), divided by 10