Available Stat

No

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Performed

Test available 24 hours per day 7 days per week.

Methodology

Flow cytometry and/or light microscopy

Reported

Turnaround time 24 hours.

Reflex Testing

If unusual findings are noted a pathologist review and interpretation may be performed and separately billed for.

Synonyms

  • Retic count

Sample Type

EDTA whole blood

Collect

Lavender top

Amount to Collect

3 mL blood

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.

Rejection Criteria

Clotted specimens

Test Code

RET

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Specimen Preparation

Do not centrifuge.

When a Reticulocyte Count must be performed manually and an RBC count is not available from a CBC or CBCD on the same sample, order an RBC.

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Rejection Criteria

Clotted specimens

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.

Units

x109/L

Reference Interval

Age Male Female
<= 4 days 65-230 x109/L 65-230 x109/L
5-30 days 17-114 x109/L 17-86 x109/L
31-60 days 30-129 x109/L 52-112 x109/L
61-180 days 36-127 x109/L 44-116 x109/L
6 months - 2 years 36-91 x109/L 40-90 x109/L
2 years - < 6 years 35-89 x109/L 35-93 x109/L
6 years - < 12 years 31-98 x109/L 35-124 x109/L
12 years - <18 years 38-104 x109/L 35-97 x109/L
≥ 18 years (Automated) 29.0-121.4 x109/L 25.6-96.9 x109/L
≥ 18 years (Manual)* 21.6-115.9 x109/L 16.2-99.8 x109/L
*Manual methods are much less accurate, and give somewhat lower results (reference range: Male >=18 year old 21.6-115.9 x 109/L, Female >=18 year old 16.2 - 99.8 x 109/L). A manual assay will be performed if required due to sample or fluorescent assay problem. For <18 year old refer to the normal range table above.

The ranges 5 days to <18 years have been extrapolated from the following reference: Steven J. Soldin, Carlo Brugnara, et al. Pediatric reference ranges, 2nd ed. Washington, DC: AACC Press, 1997

CPT Codes

85045

LOINC Codes

14196-0

Available Stat

No

Test Code

RET

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Performed

Test available 24 hours per day 7 days per week.

Methodology

Flow cytometry and/or light microscopy

Collect

Lavender top

Amount to Collect

3 mL blood

Sample Type

EDTA whole blood

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Rejection Criteria

Clotted specimens

Specimen Preparation

Do not centrifuge.

When a Reticulocyte Count must be performed manually and an RBC count is not available from a CBC or CBCD on the same sample, order an RBC.

Units

x109/L

Reference Interval

Age Male Female
<= 4 days 65-230 x109/L 65-230 x109/L
5-30 days 17-114 x109/L 17-86 x109/L
31-60 days 30-129 x109/L 52-112 x109/L
61-180 days 36-127 x109/L 44-116 x109/L
6 months - 2 years 36-91 x109/L 40-90 x109/L
2 years - < 6 years 35-89 x109/L 35-93 x109/L
6 years - < 12 years 31-98 x109/L 35-124 x109/L
12 years - <18 years 38-104 x109/L 35-97 x109/L
≥ 18 years (Automated) 29.0-121.4 x109/L 25.6-96.9 x109/L
≥ 18 years (Manual)* 21.6-115.9 x109/L 16.2-99.8 x109/L
*Manual methods are much less accurate, and give somewhat lower results (reference range: Male >=18 year old 21.6-115.9 x 109/L, Female >=18 year old 16.2 - 99.8 x 109/L). A manual assay will be performed if required due to sample or fluorescent assay problem. For <18 year old refer to the normal range table above.

The ranges 5 days to <18 years have been extrapolated from the following reference: Steven J. Soldin, Carlo Brugnara, et al. Pediatric reference ranges, 2nd ed. Washington, DC: AACC Press, 1997

Synonyms

  • Retic count

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.

Reported

Turnaround time 24 hours.

Reflex Testing

If unusual findings are noted a pathologist review and interpretation may be performed and separately billed for.

CPT Codes

85045

LOINC Codes

14196-0
Ordering

Available Stat

No

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Performed

Test available 24 hours per day 7 days per week.

Methodology

Flow cytometry and/or light microscopy

Reported

Turnaround time 24 hours.

Reflex Testing

If unusual findings are noted a pathologist review and interpretation may be performed and separately billed for.

Synonyms

  • Retic count
Collection

Sample Type

EDTA whole blood

Collect

Lavender top

Amount to Collect

3 mL blood

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.

Rejection Criteria

Clotted specimens
Processing

Test Code

RET

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Specimen Preparation

Do not centrifuge.

When a Reticulocyte Count must be performed manually and an RBC count is not available from a CBC or CBCD on the same sample, order an RBC.

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Rejection Criteria

Clotted specimens

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.
Result Interpretation

Units

x109/L

Reference Interval

Age Male Female
<= 4 days 65-230 x109/L 65-230 x109/L
5-30 days 17-114 x109/L 17-86 x109/L
31-60 days 30-129 x109/L 52-112 x109/L
61-180 days 36-127 x109/L 44-116 x109/L
6 months - 2 years 36-91 x109/L 40-90 x109/L
2 years - < 6 years 35-89 x109/L 35-93 x109/L
6 years - < 12 years 31-98 x109/L 35-124 x109/L
12 years - <18 years 38-104 x109/L 35-97 x109/L
≥ 18 years (Automated) 29.0-121.4 x109/L 25.6-96.9 x109/L
≥ 18 years (Manual)* 21.6-115.9 x109/L 16.2-99.8 x109/L
*Manual methods are much less accurate, and give somewhat lower results (reference range: Male >=18 year old 21.6-115.9 x 109/L, Female >=18 year old 16.2 - 99.8 x 109/L). A manual assay will be performed if required due to sample or fluorescent assay problem. For <18 year old refer to the normal range table above.

The ranges 5 days to <18 years have been extrapolated from the following reference: Steven J. Soldin, Carlo Brugnara, et al. Pediatric reference ranges, 2nd ed. Washington, DC: AACC Press, 1997
Administrative

CPT Codes

85045

LOINC Codes

14196-0
Complete View

Available Stat

No

Test Code

RET

Performing Lab

Parnassus, Mission Bay and Mt. Zion Hematology

Performed

Test available 24 hours per day 7 days per week.

Methodology

Flow cytometry and/or light microscopy

Collect

Lavender top

Amount to Collect

3 mL blood

Sample Type

EDTA whole blood

Preferred Volume

3 mL blood

Minimum Volume

1 mL blood

Rejection Criteria

Clotted specimens

Specimen Preparation

Do not centrifuge.

When a Reticulocyte Count must be performed manually and an RBC count is not available from a CBC or CBCD on the same sample, order an RBC.

Units

x109/L

Reference Interval

Age Male Female
<= 4 days 65-230 x109/L 65-230 x109/L
5-30 days 17-114 x109/L 17-86 x109/L
31-60 days 30-129 x109/L 52-112 x109/L
61-180 days 36-127 x109/L 44-116 x109/L
6 months - 2 years 36-91 x109/L 40-90 x109/L
2 years - < 6 years 35-89 x109/L 35-93 x109/L
6 years - < 12 years 31-98 x109/L 35-124 x109/L
12 years - <18 years 38-104 x109/L 35-97 x109/L
≥ 18 years (Automated) 29.0-121.4 x109/L 25.6-96.9 x109/L
≥ 18 years (Manual)* 21.6-115.9 x109/L 16.2-99.8 x109/L
*Manual methods are much less accurate, and give somewhat lower results (reference range: Male >=18 year old 21.6-115.9 x 109/L, Female >=18 year old 16.2 - 99.8 x 109/L). A manual assay will be performed if required due to sample or fluorescent assay problem. For <18 year old refer to the normal range table above.

The ranges 5 days to <18 years have been extrapolated from the following reference: Steven J. Soldin, Carlo Brugnara, et al. Pediatric reference ranges, 2nd ed. Washington, DC: AACC Press, 1997

Synonyms

  • Retic count

Stability (from collection to initiation)

Specimens are stable at room temperature for 48 hours, for 72 hours at 4C.

Reported

Turnaround time 24 hours.

Reflex Testing

If unusual findings are noted a pathologist review and interpretation may be performed and separately billed for.

CPT Codes

85045

LOINC Codes

14196-0

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