SYSMEX KX-21 - Page 64

SAMPLE ANALYSIS
2-28 Sysmex KX-21 Operator’s Manual -- Revised October 1998
7. EXPECTED RESULTS
Reference intervals (normal population reference ranges) were developed for the KX-21 using
normal individuals. The ranges for each parameter --- WBC, RBC, Hemoglobin, Hematocrit,
MCV, MCH, MCHC, RDW-CV, RDW-SD, Platelet, PDW*, MPV, P-LCR*, Lym% and #,
Mxd% and #, and Neut% and # were determined and displayed in Table 1-16-1.
* For Investigational Use Only in the United States of America.
Not a reportable parameter.
Parameter Range for
Females n=117
Range for Males
n=124
WBC 3.1 - 10.3 2.6 - 8.8
RBC 3.2 - 4.6 3.6 - 5.3
Hgb 9.9 -13.6 11.3 - 15.7
Hct 30.2 - 42.3 32.6 - 47.5
MCV 78.6 - 102.2 80.3 - 103.4
MCH 25.2 - 34.7 26 - 34.4
MCHC 31.3 - 35.4 31.8 - 36.3
Plt 128 - 434 134 - 377
Lym% 15 - 45.8 17.5 - 47.9
Mxd% 1.3 - 25.9 1.9 - 24.6
Neut% 43.7 - 77.1 38.3 - 69
Lym# 0.9 - 2.8 0.8 - 2.7
Mxd# 0.1 - 1.6 0.1 - 1.5
Neut# 1.6 - 6.9 1.2 - 5.3
RDW-CV 10.6 - 15.7 10.8 - 14.9
RDW-SD 35.3 - 48.9 33.4 - 49.2
PDW 9.4 - 18.1 9.8 - 18.0
MPV 8.5 - 12.4 8.1 - 12.4
P-LCR 14.3 - 44 10.7 - 45.0
Table 2-7-1: Normal Population Reference Ranges
NOTE: • The age range for females was 17 - 66 years with a mean age of 33.4.
• The age range for males was 17 - 72 years with a mean age of 42.2.
Sysmex recommends that each laboratory establish its own expected reference intervals
based upon the laboratory’s patient population encountered during daily operation. Expected
reference intervals may vary due to differences in sex, age, diet, fluid intake, geographic
location, etc. The NCCLS Document C28A
1
, “How to Define and Determine Reference
Intervals in the Clinical Laboratory; Approved Guideline”. This document contains
guidelines for determining reference values and intervals for quantitative clinical laboratory
test.
1
NCCLS, 771 East Lancaster Avenue, Villanova, PA 19085, USA.