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This test is done to ascertain the nature of fluid in the vagina during pregnancy especially when premature rupture of membranes (PROM) is suspect. This test involves putting a drop of fluid obtained from the vagina onto paper strips containing nitrazine dye. The strips change color depending on the
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This test, however, can produce false positives. If blood gets in the sample or if there is an infection present, the pH of the vaginal fluid may be higher than normal. Semen also has a higher pH, so recent vaginal intercourse can produce a false reading.
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InChI=1S/C16H10N4O11S2/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25/h1-7,17H,(H,26,27,28)(H,29,30,31)/b18-15-
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InChI=1/C16H10N4O11S2/c21-16-11-3-2-10(32(26,27)28)5-8(11)6-14(33(29,30)31)15(16)18-17-12-4-1-9(19(22)23)7-13(12)20(24)25/h1-7,17H,(H,26,27,28)(H,29,30,31)/b18-15-
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pH of the fluid. The strips will turn blue if the pH is greater than 6.0. A blue strip means it's more likely the membranes have ruptured.
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363:, nitrazine indicates pH in the range of 4.5 to 7.5. Nitrazine is usually used as the disodium salt.
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245:(=O)c1ccc(c(()=O)c1)N/N=C3/C(=C\c2c(ccc(c2)S(=O)(=O)O)C3=O)S(=O)(=O)O
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Except where otherwise noted, data are given for materials in their
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for diagnosing intestinal infections or other digestive problems
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477:"Point-of-Care Testing, Fecal pH Measurement"
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53:)-3--4-oxonaphthalene-2,7-disulfonic acid
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214:Key: IHRSXGONVFFQQF-SDXDJHTJSA-N
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224:Key: IHRSXGONVFFQQF-SDXDJHTJBN
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61:Nitrazine yellow; Phenaphthazine
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306:(at 25 °C , 100 kPa).
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296:498.40 g/mol
516:Naphthalenesulfonic acids
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511:Nitrobenzene derivatives
359:. More sensitive than
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355:dye often used in
333:Infobox references
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440:civil engineering
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341:Chemical compound
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116:Interactive image
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479:. Archived from
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261:Chemical formula
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483:on 2007-07-03.
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501:PH indicators
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481:the original
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396:above pH 7.5
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389:below pH 4.5
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380:pH indicator
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353:pH indicator
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67:Identifiers
59:Other names
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506:Stool tests
456:passivation
254:Properties
531:Obstetrics
495:Categories
463:References
446:spread in
292:Molar mass
188:4U1WVN6KUX
181:USH6E4Z2F7
127:ChemSpider
103:3D model (
74:CAS Number
46:IUPAC name
17:Nitrazine
375:Nitrazine
345:Nitrazine
91:5423-07-4
84:1716-22-9
521:Anilines
448:concrete
357:medicine
326:what is
324: (
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161:6911856
148:PubChem
136:5288340
361:litmus
321:verify
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238:SMILES
40:Names
458:film.
452:rebar
351:is a
203:InChI
105:JSmol
172:UNII
454:'s
438:In
413:7.5
403:4.5
367:Use
347:or
151:CID
497::
280:11
272:10
268:16
49:(3
408:⇌
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378:(
316:Y
284:2
282:S
278:O
276:4
274:N
270:H
266:C
107:)
51:E
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