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Table 1 Tests and techniques for HIV and related diagnoses performed at different levels

From: The readiness of the national health laboratory system in supporting care and treatment of HIV/AIDS in Tanzania

Facility level

Test

Technique

Dispensary

Haemoglobin estimation

Haemoglobinometer, HaemoCue

Sputum for AFB

ZN stain

HIV screening

Rapid screening kits

Health Centre*

Total white cell count

Manual, using Turks Fluid

Differential white cell count

Manual, using thin film

District Hospital**

Haemoglobin estimation

Hematology analyser

Total and differential white blood cell, platelet and reticulocyte count

Blood indices

CD4 and CD8 count

Serum Albumin, bilirubin, SGOT, SGPT and Alkaline phosphatise

Flow cytometer

Creatinine, Uric Acid, Cholesterol and Blood glucose

Chemistry analyser

Serum electrolytes (Na+, K+, Cl-, Ca2+)

Total protein

Cryptococcus (CSF & Serum)

Negative stain, Latex antigen

Bleeding time

Ivy

Regional Hospital***

HIV testing

ELISA

Examination of CSF for yeast

Negative staining-India ink

Reticulocytes and Eosinophil count

Vital staining

G6PD screening test

Visual colorimetric

Drug sensitivity testing

Disc diffusion

Sputum for TB

ZN Stain

AFB Microscopy

Light Emitting Diodes (LED) Microscopy

Diabetes Mellitus Screening

Oral Glucose testing

Glycosylated haemoglobin

Spectrophotometric

Zonal****

Hb types

Electrophoresis

Serum proteins and C-reactive protein

Electrophoresis

HIV testing

RNA & DNA PCR, Western blot

TB culture

LJ, MIGT

Blood culture

Bactec

Lipid profile

Colorimeter, Spectrophotometer

Lupus erythromatosus

LE cell bead extraction & staining

  1. *Include all tests done at dispensary level; **Include all tests done at Health Centre level; ***Include all tests done at district level; ****Include all tests done at Regional level
  2. Key: AFB = acid fast bacilli, Ca2+ = Calcium, Cl- = Chlorine, CSF = cerebrospinal fluid, DNA = deoxyribonucleic acid, G6PD = glucose-6-phosphate dehydrogenase, Hb = Haemoglobin, K+ = Potassium, LJ = Lowenstein Jensen, MIGT = Mycobacterial Growth Indicator Tube, Na + = Sodium, PCR = polymerase chain reaction, RNA = Ribonucleic acid, SGOT = serum glutamic-oxaloacetic transaminase or aspartate aminotransaminase (AST), SGPT = serum glutamic-pyruvic transaminase or alanine aminotransferase (ALAT), TB = Tuberculosis, ZN = Ziehl–Neelsen stain