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Reticulocyte Count, Manual

Ordering Info & Methodology

Test Code

Cerner Synonyms

RETM

Turn Around Time

Methodology

Manual count using supravital dye (New Methylene Blue)

Ordering Guide

Must be ordered with a CBC

Specimen Requirements

Sample Type

Collection Container

Alternate Collection Containers

Whole Blood EDTA

Lavender

1.0 mL

Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.

Minimum Volume

Add On Stability

Collection and Shipping Requirements

Reference Intervals

Female Reference Interval

Age Category
Reference Interval
units
0 - <6 m
100-300
x10^9/L
6 m - <6 y
40-120
x10^9/L
6 y - <19 y
30-180
x10^9/L
≥19 y
40-120
x10^9/L

Male Reference Interval

Age Category
Reference Interval
units
0 y - <6 m
100-300
x10^9/L
6m - <6 y
40-120
x10^9/L
6 y - <19 y
30-180
x10^9/L
≥19 y
40-120
x10^9/L
Additional Notes

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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.

Example

Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.

Measurement Uncertainty

Must be ordered with a CBC.

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