Helper T-Lymphocyte Marker CD4

CPT: 86361
Print Share

Synonyms

  • CD4+ Lymphocytes
  • T4 Helper Cells

Test Includes

Percentage of CD4+; absolute CD4+ (helper/inducer); absolute lymphocyte count; CBC


Expected Turnaround Time

1 - 3 days


Related Documents


Specimen Requirements


Specimen

Whole blood


Volume

Fill tube(s) to capacity


Container

Lavender-top (EDTA) tube and yellow-top (ACD-A or ACD-B) tube


Collection

Invert tube 8 to 10 times immediately after collection. To preserve cellular viability, collect specimen so it will arrive in the laboratory within 48 hours of collection. Indicate date and time of venipuncture on the tube(s) and on the test request form.


Storage Instructions

Maintain specimen at room temperature. Do not freeze or refrigerate.


Stability Requirements

Temperature

Period

Room temperature

Yellow-top (ACD-A) or (ACD-B) tube: 2 days

Lavender-top (EDTA) tube: 1 day

Refrigerated

Unstable

Frozen

Unstable

Freeze/thaw cycles

Unstable


Causes for Rejection

Hemolysis; specimen refrigerated or frozen; clotted specimen; contaminated specimen


Test Details


Use

This test is used to monitor a patient's helper/inducer T-cell status.


Methodology

Flow cytometry


Reference Interval

Reference intervals for adults have been established by the laboratory. See table.

CD4+ Reference Intervals for Lymphocyte Immunophenotyping

Age

95% Confidence Interval

Percentage

Cells/mm³

Minimum

Maximum

Minimum

Maximum

Pediatric reference intervals are from Comans-Bitter WM, de Groot R, van den Beemd R, et al. Immunophenotyping of blood lymphocytes in childhood. Reference values for lymphocyte subpopulations. J Pediatrics. 1997 Mar; 130(3):388-393.

Neonates

17

52

400

3500

1 wk to 2 m

41

68

1700

5300

2 to 5 m

33

58

1500

5000

5 to 9 m

33

58

1400

5100

9 to 15 m

31

54

1000

4600

15 to 24 m

25

50

900

5500

2 to 5 y

23

48

500

2400

5 to 10 y

27

53

300

2000

10 to 16 y

25

48

400

2100

Adults

31

59

359

1519


Additional Information

HIV-1 infection results in a decrease of CD4 T cells, an increase of CD8 T cells, a decrease in the CD4:CD8 ratio, and a progressive destruction of immune function. In HIV-1 seropositive patients, enumeration of CD4 T cells may be used for prognostic purposes and to monitor disease progression and antiretroviral therapy.


References

Giorgi J, Kesson A, Chou CC. Immunodeficiency and infectious diseases. In: Rose N, deMacario E, Fahey J, et al, eds. Manual of Clinical Laboratory Immunology. 4th ed. Washington, DC: ASM Press;1992:chap 25.
Stevens RA, Lempicki RA, Natarajan V, et al. General immunologic evaluation of patients with immunodeficiency virus infection. In: Detrick B, Hamilton RG, Folds JD, et al, eds. Manual of Molecular and Clinical Laboratory Immunology. 7th ed. Washington, DC: ASM Press;2006:chap 95.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
505008 Helper T-Lymph-CD4 65758-5 505010 Absolute CD 4 Helper /uL 24467-3
505008 Helper T-Lymph-CD4 65758-5 505009 % CD 4 Pos. Lymph. % 8123-2
505008 Helper T-Lymph-CD4 65758-5 005025 WBC x10E3/uL 6690-2
505008 Helper T-Lymph-CD4 65758-5 005033 RBC x10E6/uL 789-8
505008 Helper T-Lymph-CD4 65758-5 005041 Hemoglobin g/dL 718-7
505008 Helper T-Lymph-CD4 65758-5 005058 Hematocrit % 4544-3
505008 Helper T-Lymph-CD4 65758-5 015065 MCV fL 787-2
505008 Helper T-Lymph-CD4 65758-5 015073 MCH pg 785-6
505008 Helper T-Lymph-CD4 65758-5 015081 MCHC g/dL 786-4
505008 Helper T-Lymph-CD4 65758-5 105007 RDW % 788-0
505008 Helper T-Lymph-CD4 65758-5 015172 Platelets x10E3/uL 777-3
505008 Helper T-Lymph-CD4 65758-5 015107 Neutrophils % 770-8
505008 Helper T-Lymph-CD4 65758-5 015123 Lymphs % 736-9
505008 Helper T-Lymph-CD4 65758-5 015131 Monocytes % 5905-5
505008 Helper T-Lymph-CD4 65758-5 015149 Eos % 713-8
505008 Helper T-Lymph-CD4 65758-5 015156 Basos % 706-2
505008 Helper T-Lymph-CD4 65758-5 115398 Immature Cells N/A
505008 Helper T-Lymph-CD4 65758-5 015909 Neutrophils (Absolute) x10E3/uL 751-8
505008 Helper T-Lymph-CD4 65758-5 015917 Lymphs (Absolute) x10E3/uL 731-0
505008 Helper T-Lymph-CD4 65758-5 015925 Monocytes(Absolute) x10E3/uL 742-7
505008 Helper T-Lymph-CD4 65758-5 015933 Eos (Absolute) x10E3/uL 711-2
505008 Helper T-Lymph-CD4 65758-5 015941 Baso (Absolute) x10E3/uL 704-7
505008 Helper T-Lymph-CD4 65758-5 015108 Immature Granulocytes % 71695-1
505008 Helper T-Lymph-CD4 65758-5 015911 Immature Grans (Abs) x10E3/uL 53115-2
505008 Helper T-Lymph-CD4 65758-5 015945 NRBC % 58413-6
505008 Helper T-Lymph-CD4 65758-5 015180 Hematology Comments: 18314-5
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115400 Bands % 35332-6
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115401 Metamyelocytes % 28541-1
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115403 Myelocytes % 26498-6
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115404 Promyelocytes % 26498-6
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115405 Blasts/blast like cells % 26498-6
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115406 Megakaryocytes % 19252-6
Reflex Table for Immature Cells
Order Code Order Name Result Code Result Name UofM Result LOINC
Reflex 1 115399 Immature Cells 115265 Other, Lineage Uncertain % 55433-7

For Providers

Please login to order a test

Order a Test

© 2021 Laboratory Corporation of America® Holdings and Lexi-Comp Inc. All Rights Reserved.

CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf